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From telli...@apache.org
Subject svn commit: r386087 [36/45] - in /incubator/harmony/enhanced/classlib/trunk: make/ make/patternsets/ modules/jndi/ modules/jndi/META-INF/ modules/jndi/make/ modules/jndi/make/common/ modules/jndi/src/ modules/jndi/src/main/ modules/jndi/src/main/java/ ...
Date Wed, 15 Mar 2006 14:57:17 GMT
Added: incubator/harmony/enhanced/classlib/trunk/modules/sql/src/main/java/java/sql/DatabaseMetaData.java
URL: http://svn.apache.org/viewcvs/incubator/harmony/enhanced/classlib/trunk/modules/sql/src/main/java/java/sql/DatabaseMetaData.java?rev=386087&view=auto
==============================================================================
--- incubator/harmony/enhanced/classlib/trunk/modules/sql/src/main/java/java/sql/DatabaseMetaData.java (added)
+++ incubator/harmony/enhanced/classlib/trunk/modules/sql/src/main/java/java/sql/DatabaseMetaData.java Wed Mar 15 06:55:38 2006
@@ -0,0 +1,3079 @@
+/* Copyright 2004 The Apache Software Foundation or its licensors, as applicable
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package java.sql;
+
+/**
+ * An interface which provides comprehensive information about the database.
+ * <p>
+ * This interface is implemented by JDBC driver writers in order to provide
+ * information about the underlying Database capabilities and the JDBC driver
+ * capabilities taken together.
+ * <p>
+ * Some of the methods in this interface take String parameters which are
+ * Patterns. Within these string Patterns, '%' and '_' characters have special
+ * meanings. '%' means "match any substring of 0 or more characters". '_' means
+ * "match any one character". Only metadata entries that match the pattern are
+ * returned. If such a search pattern string is set to <code>null</code>,
+ * that argument's criteria are dropped from the search.
+ * 
+ */
+public interface DatabaseMetaData {
+
+	/**
+	 * States that it may not be permitted to store <code>NULL</code> values.
+	 */
+	public static final short attributeNoNulls = 0;
+
+	/**
+	 * States that <code>NULL</code> values are definitely permitted.
+	 */
+	public static final short attributeNullable = 1;
+
+	/**
+	 * States that whether <code>NULL</code> values are permitted is unknown.
+	 */
+	public static final short attributeNullableUnknown = 2;
+
+	/**
+	 * States the best row identifier is <em>NOT</em> a pseudo column.
+	 */
+	public static final int bestRowNotPseudo = 1;
+
+	/**
+	 * States that the best row identifier is a pseudo column.
+	 */
+	public static final int bestRowPseudo = 2;
+
+	/**
+	 * States that the remainder of the current session is used as the scope for
+	 * the best row identifier.
+	 */
+	public static final int bestRowSession = 2;
+
+	/**
+	 * States that best row identifier scope lasts only while the row is being
+	 * used.
+	 */
+	public static final int bestRowTemporary = 0;
+
+	/**
+	 * States that the remainder of the current transaction is used as the scope
+	 * for the best row identifier.
+	 */
+	public static final int bestRowTransaction = 1;
+
+	/**
+	 * States that the best row identifier may or may not be a pseudo column.
+	 */
+	public static final int bestRowUnknown = 0;
+
+	/**
+	 * States that the column might not allow <code>NULL</code> values.
+	 */
+	public static final int columnNoNulls = 0;
+
+	/**
+	 * States that the column definitely allows <code>NULL</code> values.
+	 */
+	public static final int columnNullable = 1;
+
+	/**
+	 * States that it is unknown whether the columns may be nulled.
+	 */
+	public static final int columnNullableUnknown = 2;
+
+	/**
+	 * For the column UPDATE_RULE, States that when the primary key is updated,
+	 * the foreign key (imported key) is changed to agree with it.
+	 */
+	public static final int importedKeyCascade = 0;
+
+	/**
+	 * States deferrability.
+	 */
+	public static final int importedKeyInitiallyDeferred = 5;
+
+	/**
+	 * States defer-ability.
+	 */
+	public static final int importedKeyInitiallyImmediate = 6;
+
+	/**
+	 * For the columns UPDATE_RULE and DELETE_RULE, States that if the primary
+	 * key has been imported, it cannot be updated or deleted.
+	 */
+	public static final int importedKeyNoAction = 3;
+
+	/**
+	 * States defer-ability.
+	 */
+	public static final int importedKeyNotDeferrable = 7;
+
+	/**
+	 * States that a primary key must not be updated when imported as a foreign
+	 * key by some other table. Used for the column UPDATE_RULE.
+	 */
+	public static final int importedKeyRestrict = 1;
+
+	/**
+	 * States that when the primary key is modified (updated or deleted) the
+	 * foreign (imported) key is changed to its default value. Applies to the
+	 * UPDATE_RULE and DELETE_RULE columns.
+	 */
+	public static final int importedKeySetDefault = 4;
+
+	/**
+	 * States that when the primary key is modified (updated or deleted) the
+	 * foreign (imported) key is changed to <code>NULL</code>. Applies to the
+	 * UPDATE_RULE and DELETE_RULE columns.
+	 */
+	public static final int importedKeySetNull = 2;
+
+	/**
+	 * States that this column stores IN type parameters.
+	 */
+	public static final int procedureColumnIn = 1;
+
+	/**
+	 * States that this column stores INOUT type parameters.
+	 */
+	public static final int procedureColumnInOut = 2;
+
+	/**
+	 * States that this column stores OUT type parameters.
+	 */
+	public static final int procedureColumnOut = 4;
+
+	/**
+	 * States that the column stores results
+	 */
+	public static final int procedureColumnResult = 3;
+
+	/**
+	 * States that the column stores return values.
+	 */
+	public static final int procedureColumnReturn = 5;
+
+	/**
+	 * States that type of the column is unknown.
+	 */
+	public static final int procedureColumnUnknown = 0;
+
+	/**
+	 * States that <code>NULL</code> values are not permitted.
+	 */
+	public static final int procedureNoNulls = 0;
+
+	/**
+	 * States that the procedure does not return a result.
+	 */
+	public static final int procedureNoResult = 1;
+
+	/**
+	 * States that <code>NULL</code> values are permitted.
+	 */
+	public static final int procedureNullable = 1;
+
+	/**
+	 * States that whether <code>NULL</code> values are permitted is unknown.
+	 */
+	public static final int procedureNullableUnknown = 2;
+
+	/**
+	 * States that it is unknown whether or not the procedure returns a result.
+	 */
+	public static final int procedureResultUnknown = 0;
+
+	/**
+	 * States that the procedure returns a result.
+	 */
+	public static final int procedureReturnsResult = 2;
+
+	/**
+	 * States that the value is an SQL99 SQLSTATE value.
+	 */
+	public static final int sqlStateSQL99 = 2;
+
+	/**
+	 * States that the value is an SQL CLI SQLSTATE value as defined by X/Open
+	 * (who are now know as Open Group) .
+	 */
+	public static final int sqlStateXOpen = 1;
+
+	/**
+	 * States that this table index is a clustered index.
+	 */
+	public static final short tableIndexClustered = 1;
+
+	/**
+	 * States that this table index is a hashed index.
+	 */
+	public static final short tableIndexHashed = 2;
+
+	/**
+	 * States this table's index is neither a clustered index, not a hashed
+	 * index, and not a table statistics index; i.e. it is something else.
+	 */
+	public static final short tableIndexOther = 3;
+
+	/**
+	 * States this column has the table's statistics, and that it is returned in
+	 * conjunction with the table's index description.
+	 */
+	public static final short tableIndexStatistic = 0;
+
+	/**
+	 * States that a <code>NULL</code> value is <em>NOT</em> permitted for
+	 * this data type.
+	 */
+	public static final int typeNoNulls = 0;
+
+	/**
+	 * States that a <code>NULL</code> value is permitted for this data type.
+	 */
+	public static final int typeNullable = 1;
+
+	/**
+	 * States that it is unknown if a <code>NULL</code> value is permitted for
+	 * this data type.
+	 */
+	public static final int typeNullableUnknown = 2;
+
+	/**
+	 * States that one can base all WHERE search clauses except WHERE .
+	 */
+	public static final int typePredBasic = 2;
+
+	/**
+	 * States that <code>WHERE</code> is the only WHERE search clause that may
+	 * be based on this type.
+	 */
+	public static final int typePredChar = 1;
+
+	/**
+	 * States that this type does not support <code>WHERE</code> search
+	 * clauses.
+	 */
+	public static final int typePredNone = 0;
+
+	/**
+	 * States that all WHERE search clauses may be based on this type.
+	 */
+	public static final int typeSearchable = 3;
+
+	/**
+	 * States that the version column is known to be not a pseudo column.
+	 */
+	public static final int versionColumnNotPseudo = 1;
+
+	/**
+	 * States that this version column is known to be a pseudo column.
+	 */
+	public static final int versionColumnPseudo = 2;
+
+	/**
+	 * States that the version column may be a pseudo column or not.
+	 */
+	public static final int versionColumnUnknown = 0;
+
+	/**
+	 * Answers whether all procedures returned by <code>getProcedures</code>
+	 * can be called by the current user.
+	 * 
+	 * @return <code>true</code> if all procedures can be called by the
+	 *         current user, <code>false</code> otherwise.
+	 * @throws SQLException
+	 *             if there is a database error
+	 */
+	public boolean allProceduresAreCallable() throws SQLException;
+
+	/**
+	 * Answers whether all the tables returned by <code>getTables</code> can
+	 * be used by the current user in a SELECT statement.
+	 * 
+	 * @return <code>true</code> if all the tables can be used,<code>false</code>
+	 *         otherwise
+	 * @throws SQLException
+	 *             if there is a database error
+	 */
+	public boolean allTablesAreSelectable() throws SQLException;
+
+	/**
+	 * Answers if a data definition statement in a transaction forces a commit
+	 * of the transaction.
+	 * 
+	 * @return <code>true</code> if the statement forces a commit,
+	 *         <code>false</code> otherwise
+	 * @throws SQLException
+	 *             if there is a database error
+	 */
+	public boolean dataDefinitionCausesTransactionCommit() throws SQLException;
+
+	/**
+	 * Answers whether the database ignores data definition statements within a
+	 * transaction.
+	 * 
+	 * @return <code>true</code> if the database ignores a data definition
+	 *         statement, <code>false</code> otherwise
+	 * @throws SQLException
+	 *             if there is a database error
+	 */
+	public boolean dataDefinitionIgnoredInTransactions() throws SQLException;
+
+	/**
+	 * Answers whether a visible row delete can be detected by calling
+	 * <code>ResultSet.rowDeleted</code>.
+	 * 
+	 * @param type
+	 *            the type of the ResultSet involved:
+	 *            <code>ResultSet.TYPE_FORWARD_ONLY</code>,
+	 *            <code>ResultSet.TYPE_SCROLL_INSENSITIVE</code>, or
+	 *            <code>ResultSet.TYPE_SCROLL_SENSITIVE</code>
+	 * @return <code>true</code> if the visible row delete can be detected,
+	 *         <code>false</code> otherwise
+	 * @throws SQLException
+	 *             if there is a database error
+	 */
+	public boolean deletesAreDetected(int type) throws SQLException;
+
+	/**
+	 * Answers whether the return value of <code>getMaxRowSize</code> includes
+	 * the SQL data types <code>LONGVARCHAR</code> and
+	 * <code>LONGVARBINARY</code>.
+	 * 
+	 * @return <code>true</code> if the return value includes
+	 *         <code>LONGVARBINARY</code> and <code>LONGVARCHAR</code>,
+	 *         otherwise <code>false</code>.
+	 * @throws SQLException
+	 *             if there is a database error
+	 */
+	public boolean doesMaxRowSizeIncludeBlobs() throws SQLException;
+
+	/**
+	 * Answers a description of the specified attribute of the specified type
+	 * for an SQL User Defined Type (UDT) for a specified schema and catalog.
+	 * The descriptions returned are ordered by <code>TYPE_SCHEM</code>,
+	 * <code>TYPE_NAME</code> and ORDINAL_POSITION. The descriptions do not
+	 * contain inherited attributes.
+	 * <p>
+	 * The returned ResultSet object has rows with the following column names
+	 * and meanings:
+	 * <ol>
+	 * <li><code>TYPE_CAT</code> - String - the Type Catalog name (possibly
+	 * <code>null</code>)</li>
+	 * <li><code>TYPE_SCHEM</code> - String - the Type Schema name (possibly
+	 * <code>null</code>)</li>
+	 * <li><code>TYPE_NAME</code> - String - the Type name</li>
+	 * <li><code>ATTR_NAME</code> - String - the Attribute name</li>
+	 * <li><code>DATA_TYPE</code> - int - the Attribute type as defined in
+	 * <code>java.sql.Types</code></li>
+	 * <li><code>ATTR_TYPE_NAME</code> - String - the Attribute type name.
+	 * This depends on the data source. For a <code>UDT</code> the name is
+	 * fully qualified. For a <code>REF</code> it is both fully qualified and
+	 * represents the target type of the reference.</li>
+	 * <li><code>ATTR_SIZE</code> - int - the Column size. When referring to
+	 * char and date types this value is the maximum number of characters. When
+	 * referring to numeric types is is the precision.</li>
+	 * <li><code>DECIMAL_DIGITS</code> - int - how many fractional digits are
+	 * supported</li>
+	 * <li><code>NUM_PREC_RADIX</code> - int - numeric values radix</li>
+	 * <li><code>NULLABLE</code> - int - whether <code>NULL</code> is
+	 * permitted:
+	 * <ul>
+	 * <li>DatabaseMetaData.attributeNoNulls - might not allow
+	 * <code>NULL</code>s</li>
+	 * <li>DatabaseMetaData.attributeNullable - <code>NULL</code>s
+	 * definitely permitted</li>
+	 * <li>DatabaseMetaData.attributeNullableUnknown - unknown</li>
+	 * </ul>
+	 * </li>
+	 * <li><code>REMARKS</code> - String - A comment describing the attribute
+	 * (possibly <code>null</code>)</li>
+	 * <li>ATTR_DEF - String - Default value for the attribute (possibly
+	 * <code>null</code>)</li>
+	 * <li><code>SQL_DATA_TYPE</code> - int - not used</li>
+	 * <li>SQL_DATETIME_SUB - int - not used</li>
+	 * <li>CHAR_OCTET_LENGTH - int - For <code>CHAR</code> types, the max
+	 * number of bytes in the column</li>
+	 * <li>ORDINAL_POSITION - int - The Index of the column in the Table (based
+	 * on 1)</li>
+	 * <li>IS_NULLABLE - String - "NO" = column does not allow
+	 * <code>NULL</code>s, "YES" = column allows <code>NULL</code>s "" =
+	 * <code>NULL</code> status unknown</li>
+	 * <li><code>SCOPE_CATALOG</code> - String - Catalog for table,
+	 * <code>SCOPE</code> of Reference attribute. NULL if
+	 * <code>DATA_TYPE</code> is not REF.</li>
+	 * <li><code>SCOPE_SCHEMA</code> - String - Schema for table,
+	 * <code>SCOPE</code> of Reference attribute. NULL if
+	 * <code>DATA_TYPE</code> is not REF.</li>
+	 * <li><code>SCOPE_TABLE</code> - String - Table name for
+	 * <code>SCOPE</code> of Reference attribute. <code>NULL</code> if
+	 * <code>DATA_TYPE</code> is not REF.</li>
+	 * <li><code>SOURCE_DATA_TYPE</code> - String - The source type for user
+	 * generated REF type or for a Distinct type. (<code>NULL</code> if
+	 * <code>DATA_TYPE</code> is not DISTINCT or user generated REF)</li>
+	 * </ol>
+	 * 
+	 * @param catalog
+	 *            a Catalog Name. <code>null</code> is used to imply no
+	 *            narrowing of the search using Catalog Name. Otherwise, the
+	 *            name must match a Catalog Name held in the database, with ""
+	 *            used to retrieve those without a Catalog Name.
+	 * @param schemaPattern
+	 *            a Schema Name Pattern. <code>null</code> is used to imply no
+	 *            narrowing of the search using Schema Name. Otherwise, the name
+	 *            must match a Schema name in the database, with "" used to
+	 *            retrieve those without a Schema name.
+	 * @param typeNamePattern
+	 *            a Type name. This pattern must match the type name stored in
+	 *            the database.
+	 * @param attributeNamePattern
+	 *            an Attribute name. Must match the attribute name as stored in
+	 *            the database.
+	 * @return a ResultSet, where each Row is an attribute description
+	 * @throws SQLException
+	 *             if there is a database error
+	 */
+	public ResultSet getAttributes(String catalog, String schemaPattern,
+			String typeNamePattern, String attributeNamePattern)
+			throws SQLException;
+
+	/**
+	 * Answers a list of a table's optimal set of columns that uniquely
+	 * identifies a row. The results are ordered by <code>SCOPE</code> (see
+	 * below).
+	 * <p>
+	 * The results are returned as a table, with one entry for each column, as
+	 * follows:
+	 * <ol>
+	 * <li><code>SCOPE</code> - short - the <code>SCOPE</code> of the
+	 * result, as follows:
+	 * <ul>
+	 * <li>DatabaseMetaData.bestRowTemporary - very temporary, while using row
+	 * </li>
+	 * <li>DatabaseMetaData.bestRowTransaction - good for remainder of current
+	 * transaction </li>
+	 * <li>DatabaseMetaData.bestRowSession - good for remainder of database
+	 * session </li>
+	 * </ul>
+	 * </li>
+	 * <li><code>COLUMN_NAME</code> - String - the column name </li>
+	 * <li><code>DATA_TYPE</code> - int - the Type of the data, as defined in
+	 * <code>java.sql.Types</code> </li>
+	 * <li><code>TYPE_NAME</code> - String - Name of the type - database
+	 * dependent. For UDT types the name is fully qualified </li>
+	 * <li><code>COLUMN_SIZE</code> - int - The precision of the data in the
+	 * column </li>
+	 * <li><code>BUFFER_LENGTH</code> - int - not used </li>
+	 * <li><code>DECIMAL_DIGITS</code> - short - number of fractional digits
+	 * </li>
+	 * <li><code>PSEUDO_COLUMN</code> - short - whether this is a pseudo
+	 * column eg. and Oracle ROWID:
+	 * <ul>
+	 * <li>DatabaseMetaData.bestRowUnknown - don't know whether this is a
+	 * pseudo column</li>
+	 * <li>DatabaseMetaData.bestRowNotPseudo - column is not pseudo</li>
+	 * <li>DatabaseMetaData.bestRowPseudo - column is a pseudo column</li>
+	 * </ul>
+	 * </li>
+	 * </ol>
+	 * 
+	 * @param catalog
+	 *            a Catalog Name. <code>null</code> is used to imply no
+	 *            narrowing of the search using Catalog Name. Otherwise, the
+	 *            name must match a Catalog Name held in the database, with ""
+	 *            used to retrieve those without a Catalog Name.
+	 * @param schema
+	 *            a Schema Name Pattern. <code>null</code> is used to imply no
+	 *            narrowing of the search using Schema Name. Otherwise, the name
+	 *            must match a Schema name in the database, with "" used to
+	 *            retrieve those without a Schema name.
+	 * @param table
+	 *            the table name. This must match the name of the table as
+	 *            declared in the database.
+	 * @param scope
+	 *            the <code>SCOPE</code> of interest, values as defined above
+	 * @param nullable
+	 *            <code>true</code> = include columns that are nullable,
+	 *            <code>false</code> = do not include
+	 * @return a ResultSet where each row is a description of a column and the
+	 *         complete set of rows is the optimal set for this table.
+	 * @throws SQLException
+	 *             if there is a database error
+	 */
+	public ResultSet getBestRowIdentifier(String catalog, String schema,
+			String table, int scope, boolean nullable) throws SQLException;
+
+	/**
+	 * Answers the set of catalog names available in this database. The set is
+	 * returned ordered by catalog name.
+	 * 
+	 * @return a ResultSet containing the Catalog names, with each row
+	 *         containing one Catalog name contained as a String in the single
+	 *         column named <code>TABLE_CAT</code>.
+	 * @throws SQLException
+	 *             if there is a database error
+	 */
+	public ResultSet getCatalogs() throws SQLException;
+
+	/**
+	 * Answers the separator that this database uses between a catalog name and
+	 * table name.
+	 * 
+	 * @return a String containing the separator
+	 * @throws SQLException
+	 *             if there is a database error
+	 */
+	public String getCatalogSeparator() throws SQLException;
+
+	/**
+	 * Answers the term that the database vendor prefers term for "catalog".
+	 * 
+	 * @return a String with the vendor's term for "catalog"
+	 * @throws SQLException
+	 *             if there is a database error
+	 */
+	public String getCatalogTerm() throws SQLException;
+
+	/**
+	 * Answers a description of access rights for a table's columns. Only access
+	 * rights matching the criteria for the column name are returned.
+	 * <p>
+	 * The description is returned as a ResultSet with rows of data for each
+	 * access right, with columns as follows:
+	 * <ol>
+	 * <li><code>TABLE_CAT</code> - String - Catalog name (possibly
+	 * <code>null</code>)</li>
+	 * <li><code>TABLE_SCHEM</code> - String - Schema name (possibly
+	 * <code>null</code>) </li>
+	 * <li><code>TABLE_NAME</code> - String - The Table name </li>
+	 * <li><code>COLUMN_NAME</code> - String - The Column name</li>
+	 * <li><code>GRANTOR</code> - String - The grantor of access (possibly
+	 * <code>null</code>)</li>
+	 * <li><code>PRIVILEGE</code> - String - Access right - one of SELECT,
+	 * INSERT, UPDATE, REFERENCES,...</li>
+	 * <li><code>IS_GRANTABLE</code> - String - "YES" implies that the
+	 * receiver can grant access to others, "NO" if the receiver cannot grant
+	 * access to others, <code>null</code> if unknown.</li>
+	 * </ol>
+	 * 
+	 * @param catalog
+	 *            a Catalog Name. <code>null</code> is used to imply no
+	 *            narrowing of the search using Catalog Name. Otherwise, the
+	 *            name must match a Catalog Name held in the database, with ""
+	 *            used to retrieve those without a Catalog Name.
+	 * @param schema
+	 *            a Schema Name Pattern. <code>null</code> is used to imply no
+	 *            narrowing of the search using Schema Name. Otherwise, the name
+	 *            must match a Schema name in the database, with "" used to
+	 *            retrieve those without a Schema name.
+	 * @param table
+	 *            the table name. This must match the name of the table as
+	 *            declared in the database.
+	 * @param columnNamePattern
+	 *            the column name. This must match the name of a column in the
+	 *            table in the database.
+	 * @return a ResultSet containing the access rights, one row for each
+	 *         privilege description
+	 * @throws SQLException
+	 *             if there is a database error
+	 */
+	public ResultSet getColumnPrivileges(String catalog, String schema,
+			String table, String columnNamePattern) throws SQLException;
+
+	/**
+	 * Answers a description of table columns available in a specified catalog.
+	 * Only descriptions meeting the specified Catalog, Schema, Table and Column
+	 * names are returned.
+	 * <p>
+	 * The descriptions are returned as a ResultSet conforming to the following
+	 * data layout, with one row per table column:
+	 * <ol>
+	 * <li><code>TABLE_CAT</code> - String - Catalog name (possibly
+	 * <code>null</code>)</li>
+	 * <li><code>TABLE_SCHEM</code> - String - Schema name (possibly
+	 * <code>null</code>) </li>
+	 * <li><code>TABLE_NAME</code> - String - The Table name </li>
+	 * <li><code>COLUMN_NAME</code> - String - The Column name</li>
+	 * <li><code>DATA_TYPE</code> - int - The SQL type as specified in
+	 * <code>java.sql.Types</code></li>
+	 * <li><code>TYPE_NAME</code> - String - Name for the data type, depends
+	 * on database, UDT names are fully qualified</li>
+	 * <li><code>COLUMN_SIZE</code> - int - Column size - the precision for
+	 * numeric types, max characters for char and date types</li>
+	 * <li><code>BUFFER_LENGTH</code> - int - Not used </li>
+	 * <li><code>DECIMAL_DIGITS</code> - int - maximum number of fractional
+	 * digits </li>
+	 * <li><code>NUM_PREC_RADIX</code> - int - the Radix </li>
+	 * <li><code>NULLABLE</code> - int - does the column allow
+	 * <code>null</code>s:
+	 * <ul>
+	 * <li>DatabaseMetaData.columnNoNulls = may not allow <code>NULL</code>s</li>
+	 * <li>DatabaseMetaData.columnNullable = does allow <code>NULL</code>s</li>
+	 * <li>DatabaseMetaData.columnNullableUnknown = unknown <code>NULL</code>
+	 * status</li>
+	 * </ul>
+	 * </li>
+	 * <li><code>REMARKS</code> - String - A description of the column
+	 * (possibly <code>null</code>) </li>
+	 * <li><code>COLUMN_DEF</code> - String - Default value for the column
+	 * (possibly <code>null</code>)</li>
+	 * <li><code>SQL_DATA_TYPE</code> - int - not used </li>
+	 * <li><code>SQL_DATETIME_SUB</code> - int - not used </li>
+	 * <li><code>CHAR_OCTET_LENGTH</code> - int - maximum number of bytes in
+	 * the char type columns </li>
+	 * <li><code>ORDINAL_POSITION</code> - int - Column index in the table (1
+	 * based) </li>
+	 * <li><code>IS_NULLABLE</code> - String - "NO" = column does not allow
+	 * NULLs, "YES" = column allows NULLs "" = <code>NULL</code> status
+	 * unknown</li>
+	 * <li><code>SCOPE</code>_CATALOG - String - Catalog for table,
+	 * <code>SCOPE</code> of Reference attribute. NULL if
+	 * <code>DATA_TYPE</code> is not REF.</li>
+	 * <li><code>SCOPE_SCHEMA</code> - String - Schema for table, scope of
+	 * Reference attribute. <code>NULL</code> if <code>DATA_TYPE</code> is
+	 * not REF.</li>
+	 * <li><code>SCOPE_TABLE</code> - String - Table name for scope of
+	 * Reference attribute. <code>NULL</code> if <code>DATA_TYPE</code> is
+	 * not REF.</li>
+	 * <li><code>SOURCE_DATA_TYPE</code> - String - The source type for user
+	 * generated REF type or for a Distinct type. (<code>NULL</code> if
+	 * <code>DATA_TYPE</code> is not DISTINCT or user generated REF)</li>
+	 * </ol>
+	 * 
+	 * @param catalog
+	 *            a Catalog Name. <code>null</code> is used to imply no
+	 *            narrowing of the search using Catalog Name. Otherwise, the
+	 *            name must match a Catalog Name held in the database, with ""
+	 *            used to retrieve those without a Catalog Name.
+	 * @param schemaPattern
+	 *            a Schema Name Pattern. <code>null</code> is used to imply no
+	 *            narrowing of the search using Schema Name. Otherwise, the name
+	 *            must match a Schema name in the database, with "" used to
+	 *            retrieve those without a Schema name.
+	 * @param tableNamePattern
+	 *            the table name. This must match the name of the table as
+	 *            declared in the database.
+	 * @param columnNamePattern
+	 *            the column name. This must match the name of a column in the
+	 *            table in the database.
+	 * @return the descriptions as a ResultSet with rows in the form defined
+	 *         above
+	 * @throws SQLException
+	 *             if there is a database error
+	 */
+	public ResultSet getColumns(String catalog, String schemaPattern,
+			String tableNamePattern, String columnNamePattern)
+			throws SQLException;
+
+	/**
+	 * Answers the database connection that created this metadata.
+	 * 
+	 * @return the connection
+	 * @throws SQLException
+	 *             if there is a database error
+	 */
+	public Connection getConnection() throws SQLException;
+
+	/**
+	 * Answers a list of foreign key columns in a given foreign key table that
+	 * reference the primary key columns of a supplied primary key table. This
+	 * describes how one table imports the key of another table. It would be
+	 * expected to return a single foreign key - primary key pair in most cases.
+	 * <p>
+	 * The descriptions are returned as a ResultSet with one row for each
+	 * Foreign key, with the following layout:
+	 * <ol>
+	 * <li><code>PKTABLE_CAT</code> - String - from the primary key table :
+	 * Catalog (possibly <code>null</code>)</li>
+	 * <li><code>PKTABLE_SCHEM</code> - String - from the primary key table :
+	 * Schema (possibly <code>null</code>) </li>
+	 * <li><code>PKTABLE_NAME</code> - String - primary key table : name
+	 * </li>
+	 * <li><code>PKCOLUMN_NAME</code> - String - primary key column : name</li>
+	 * <li><code>FKTABLE_CAT</code> - String - from the foreign key table :
+	 * the catalog name being exported (possibly <code>null</code>)</li>
+	 * <li><code>FKTABLE_SCHEM</code> - String - foreign key table : Schema
+	 * name being exported (possibly <code>null</code>) </li>
+	 * <li><code>FKTABLE_NAME</code> - String - foreign key table : the name
+	 * being exported</li>
+	 * <li><code>FKCOLUMN_NAME</code> - String - foreign key column : the
+	 * name being exported</li>
+	 * <li><code>KEY_SEQ</code> - short - sequence number (in the foreign
+	 * key)</li>
+	 * <li><code>UPDATE_RULE</code> - short - how to treat foreign key when
+	 * primary key is updated:
+	 * <ul>
+	 * <li>DatabaseMetaData.importedKeyNoAction - don't allow update of primary
+	 * key if imported</li>
+	 * <li>DatabaseMetaData.importedKeyCascade - change imported key to match
+	 * the primary key update</li>
+	 * <li>DatabaseMetaData.importedKeySetNull - set the imported key to
+	 * <code>null</code></li>
+	 * <li>DatabaseMetaData.importedKeySetDefault - set the imported key to
+	 * default values</li>
+	 * <li>DatabaseMetaData.importedKeyRestrict - same as importedKeyNoAction</li>
+	 * </ul>
+	 * </li>
+	 * <li><code>DELETE_RULE</code> - short - how to treat foreign key when
+	 * primary key is deleted:
+	 * <ul>
+	 * <li>DatabaseMetaData.importedKeyNoAction - don't allow delete of primary
+	 * key if imported</li>
+	 * <li>DatabaseMetaData.importedKeyCascade - delete those rows that import
+	 * a deleted key</li>
+	 * <li>DatabaseMetaData.importedKeySetNull - set the imported key to
+	 * <code>null</code></li>
+	 * <li>DatabaseMetaData.importedKeySetDefault - set the imported key to
+	 * default values</li>
+	 * <li>DatabaseMetaData.importedKeyRestrict - same as importedKeyNoAction</li>
+	 * </ul>
+	 * </li>
+	 * <li>FK_NAME - String - foreign key name (possibly <code>null</code>)</li>
+	 * <li>PK_NAME - String - primary key name (possibly <code>null</code>)</li>
+	 * <li>DEFERRABILITY - short - can foreign key constraints be deferred
+	 * until commit (see SQL92 specification for definitions)?:
+	 * <ul>
+	 * <li>DatabaseMetaData.importedKeyInitiallyDeferred</li>
+	 * <li>DatabaseMetaData.importedKeyInitiallyImmediate</li>
+	 * <li>DatabaseMetaData.importedKeyNotDeferrable</li>
+	 * </ul>
+	 * </li>
+	 * </ol>
+	 * 
+	 * @param primaryCatalog
+	 *            a Catalog Name. <code>null</code> is used to imply no
+	 *            narrowing of the search using Catalog Name. Otherwise, the
+	 *            name must match a Catalog Name held in the database, with ""
+	 *            used to retrieve those without a Catalog Name.
+	 * @param primarySchema
+	 *            a Schema Name. <code>null</code> is used to imply no
+	 *            narrowing of the search using Schema Name. Otherwise, the name
+	 *            must match a Schema name in the database, with "" used to
+	 *            retrieve those without a Schema name.
+	 * @param primaryTable
+	 *            the name of the table which exports the key. It must match the
+	 *            name of the table in the database
+	 * @param foreignCatalog
+	 *            a Catalog Name. <code>null</code> is used to imply no
+	 *            narrowing of the search using Catalog Name. Otherwise, the
+	 *            name must match a Catalog Name held in the database, with ""
+	 *            used to retrieve those without a Catalog Name.
+	 * @param foreignSchema
+	 *            a Schema Name. <code>null</code> is used to imply no
+	 *            narrowing of the search using Schema Name. Otherwise, the name
+	 *            must match a Schema name in the database, with "" used to
+	 *            retrieve those without a Schema name.
+	 * @param foreignTable
+	 *            the name of the table importing the key. It must match the
+	 *            name of the table in the database
+	 * @return a ResultSet containing rows with the descriptions of the foreign
+	 *         keys laid out according to the format defined above.
+	 * @throws SQLException
+	 *             if there is a database error
+	 */
+	public ResultSet getCrossReference(String primaryCatalog,
+			String primarySchema, String primaryTable, String foreignCatalog,
+			String foreignSchema, String foreignTable) throws SQLException;
+
+	/**
+	 * Answers the major version number of the database software.
+	 * 
+	 * @return the Major version number of the database software.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getDatabaseMajorVersion() throws SQLException;
+
+	/**
+	 * Answers the minor version number of the database software.
+	 * 
+	 * @return the Minor version number of the database software.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getDatabaseMinorVersion() throws SQLException;
+
+	/**
+	 * Answers the name of the database software.
+	 * 
+	 * @return a String with the name of the database software.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public String getDatabaseProductName() throws SQLException;
+
+	/**
+	 * Answers the version number of this database software.
+	 * 
+	 * @return a String with the version number of the database software.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public String getDatabaseProductVersion() throws SQLException;
+
+	/**
+	 * Answers the default transaction isolation level for this database.
+	 * 
+	 * @return the default transaction isolation level. One of
+	 *         <code>TRANSACTION_NONE</code>,
+	 *         <code>TRANSACTION_READ_COMMITTED</code>,
+	 *         <code>TRANSACTION_READ_UNCOMMITTED</code>,
+	 *         <code>TRANSACTION_REPEATABLE_READ</code> or
+	 *         <code>TRANSACTION_SERIALIZABLE</code>.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getDefaultTransactionIsolation() throws SQLException;
+
+	/**
+	 * Answers the JDBC driver's major version number.
+	 * 
+	 * @return the driver's major version number
+	 */
+	public int getDriverMajorVersion();
+
+	/**
+	 * Answers the JDBC driver's minor version number.
+	 * 
+	 * @return the driver's minor version number
+	 */
+	public int getDriverMinorVersion();
+
+	/**
+	 * Answers the name of this JDBC driver.
+	 * 
+	 * @return a String containing the name of the JDBC driver
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public String getDriverName() throws SQLException;
+
+	/**
+	 * Answers the version number of this JDBC driver.
+	 * 
+	 * @return a String containing the complete version number of the JDBC
+	 *         driver
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public String getDriverVersion() throws SQLException;
+
+	/**
+	 * Answers a list of the foreign key columns that reference the primary key
+	 * columns of a specified table (the foreign keys exported by a table).
+	 * <p>
+	 * The list is returned as a ResultSet with a row for each of the foreign
+	 * key columns, ordered by <code>FKTABLE_CAT</code>,
+	 * <code>FKTABLE_SCHEM</code>, <code>FKTABLE_NAME</code>, and
+	 * <code>KEY_SEQ</code>, with the format for each row being:
+	 * <ol>
+	 * <li><code>PKTABLE_CAT</code> - String - primary key table : Catalog
+	 * (possibly <code>null</code>)</li>
+	 * <li><code>PKTABLE_SCHEM</code> - String - primary key table : Schema
+	 * (possibly <code>null</code>) </li>
+	 * <li><code>PKTABLE_NAME</code> - String - primary key table : name
+	 * </li>
+	 * <li><code>PKCOLUMN_NAME</code> - String - primary key column : name</li>
+	 * <li><code>FKTABLE_CAT</code> - String - foreign key table : Catalog
+	 * name being exported (possibly <code>null</code>)</li>
+	 * <li><code>FKTABLE_SCHEM</code> - String - foreign key table : Schema
+	 * name being exported (possibly <code>null</code>) </li>
+	 * <li><code>FKTABLE_NAME</code> - String - foreign key table : name
+	 * being exported</li>
+	 * <li><code>FKCOLUMN_NAME</code> - String - foreign key column : name
+	 * being exported</li>
+	 * <li>KEY_SEQ - short - sequence number in the foreign key</li>
+	 * <li>UPDATE_RULE - short - how to treat foreign key when primary key is
+	 * updated:
+	 * <ul>
+	 * <li>DatabaseMetaData.importedKeyNoAction - don't allow update of primary
+	 * key if imported</li>
+	 * <li>DatabaseMetaData.importedKeyCascade - change imported key to match
+	 * the primary key update</li>
+	 * <li>DatabaseMetaData.importedKeySetNull - set the imported key to
+	 * <code>null</code></li>
+	 * <li>DatabaseMetaData.importedKeySetDefault - set the imported key to
+	 * default values</li>
+	 * <li>DatabaseMetaData.importedKeyRestrict - same as importedKeyNoAction</li>
+	 * </ul>
+	 * </li>
+	 * <li>DELETE_RULE - short - how to treat foreign key when primary key is
+	 * deleted:
+	 * <ul>
+	 * <li>DatabaseMetaData.importedKeyNoAction - don't allow delete of primary
+	 * key if imported</li>
+	 * <li>DatabaseMetaData.importedKeyCascade - the deletion should also
+	 * delete rows that import a deleted key</li>
+	 * <li>DatabaseMetaData.importedKeySetNull - it should set the imported key
+	 * to <code>null</code></li>
+	 * <li>DatabaseMetaData.importedKeySetDefault - deletion sets the imported
+	 * key to default values</li>
+	 * <li>DatabaseMetaData.importedKeyRestrict - same as importedKeyNoAction</li>
+	 * </ul>
+	 * </li>
+	 * <li>FK_NAME - String - foreign key name (possibly <code>null</code>)</li>
+	 * <li>PK_NAME - String - primary key name (possibly <code>null</code>)</li>
+	 * <li>DEFERRABILITY - short - defines whether foreign key constraints can
+	 * be deferred until commit (see SQL92 specification for definitions):
+	 * <ul>
+	 * <li>DatabaseMetaData.importedKeyInitiallyDeferred</li>
+	 * <li>DatabaseMetaData.importedKeyInitiallyImmediate</li>
+	 * <li>DatabaseMetaData.importedKeyNotDeferrable</li>
+	 * </ul>
+	 * </li>
+	 * </ol>
+	 * 
+	 * @param catalog
+	 *            a Catalog Name. <code>null</code> is used to imply no
+	 *            narrowing of the search using Catalog Name. Otherwise, the
+	 *            name must match a Catalog Name held in the database, with ""
+	 *            used to retrieve those without a Catalog Name.
+	 * @param schema
+	 *            a Schema Name. <code>null</code> is used to imply no
+	 *            narrowing of the search using Schema Name. Otherwise, the name
+	 *            must match a Schema name in the database, with "" used to
+	 *            retrieve those without a Schema name.
+	 * @param table
+	 *            a table name, which must match the name of a table in the
+	 *            database
+	 * @return a ResultSet containing a row for each of the foreign key columns,
+	 *         as defined above
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public ResultSet getExportedKeys(String catalog, String schema, String table)
+			throws SQLException;
+
+	/**
+	 * Answers a string of characters that may be used in unquoted identifier
+	 * names. The characters a-z, A-Z, 0-9 and _ are always permitted.
+	 * 
+	 * @return a String containing all the extra characters
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public String getExtraNameCharacters() throws SQLException;
+
+	/**
+	 * Answers the string used to quote SQL identifiers. Returns " " (space) if
+	 * identifier quoting not supported.
+	 * 
+	 * @return the String used to quote SQL identifiers.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public String getIdentifierQuoteString() throws SQLException;
+
+	/**
+	 * Answers a list columns in a table that are both primary keys and
+	 * referenced by the table's foreign key columns (that is, the primary keys
+	 * imported by a table).
+	 * <p>
+	 * The list returned is a <code>ResultSet</code> with a row entry for each
+	 * primary key column, ordered by <code>PKTABLE_CAT</code>,
+	 * <code>PKTABLE_SCHEM</code>, <code>PKTABLE_NAME</code>, and
+	 * <code>KEY_SEQ</code>, with the following format:
+	 * <ol>
+	 * <li><code>PKTABLE_CAT</code> - String - primary key Catalog name being
+	 * imported (possibly <code>null</code>)</li>
+	 * <li><code>PKTABLE_SCHEM</code> - String - primary key Schema name
+	 * being imported (possibly <code>null</code>) </li>
+	 * <li><code>PKTABLE_NAME</code> - String - primary key Table name being
+	 * imported </li>
+	 * <li><code>PKCOLUMN_NAME</code> - String - primary key column name
+	 * being imported</li>
+	 * <li><code>FKTABLE_CAT</code> - String - foreign key table catalog name
+	 * (possibly <code>null</code>)</li>
+	 * <li><code>FKTABLE_SCHEM</code> - String - foreign key table Schema
+	 * name (possibly <code>null</code>) </li>
+	 * <li><code>FKTABLE_NAME</code> - String - foreign key table name</li>
+	 * <li><code>FKCOLUMN_NAME</code> - String - foreign key column name</li>
+	 * <li>KEY_SEQ - short - sequence number in the foreign key</li>
+	 * <li>UPDATE_RULE - short - how to treat foreign key when primary key is
+	 * updated:
+	 * <ul>
+	 * <li>DatabaseMetaData.importedKeyNoAction - don't allow update of primary
+	 * key if imported</li>
+	 * <li>DatabaseMetaData.importedKeyCascade - change imported key to match
+	 * the primary key update</li>
+	 * <li>DatabaseMetaData.importedKeySetNull - set the imported key to
+	 * <code>null</code></li>
+	 * <li>DatabaseMetaData.importedKeySetDefault - set the imported key to
+	 * default values</li>
+	 * <li>DatabaseMetaData.importedKeyRestrict - same as importedKeyNoAction</li>
+	 * </ul>
+	 * </li>
+	 * <li>DELETE_RULE - short - how to treat foreign key when primary key is
+	 * deleted:
+	 * <ul>
+	 * <li>DatabaseMetaData.importedKeyNoAction - don't allow delete of primary
+	 * key if imported</li>
+	 * <li>DatabaseMetaData.importedKeyCascade - delete those rows that import
+	 * a deleted key</li>
+	 * <li>DatabaseMetaData.importedKeySetNull - set the imported key to
+	 * <code>null</code></li>
+	 * <li>DatabaseMetaData.importedKeySetDefault - set the imported key to
+	 * default values</li>
+	 * <li>DatabaseMetaData.importedKeyRestrict - same as importedKeyNoAction</li>
+	 * </ul>
+	 * </li>
+	 * <li>FK_NAME - String - foreign key name (possibly <code>null</code>)</li>
+	 * <li>PK_NAME - String - primary key name (possibly <code>null</code>)</li>
+	 * <li>DEFERRABILITY - short - defines whether foreign key constraints can
+	 * be deferred until commit (see SQL92 specification for definitions):
+	 * <ul>
+	 * <li>DatabaseMetaData.importedKeyInitiallyDeferred</li>
+	 * <li>DatabaseMetaData.importedKeyInitiallyImmediate</li>
+	 * <li>DatabaseMetaData.importedKeyNotDeferrable</li>
+	 * </ul>
+	 * </li>
+	 * </ol>
+	 * 
+	 * @param catalog
+	 *            a Catalog Name. <code>null</code> is used to imply no
+	 *            narrowing of the search using Catalog Name. Otherwise, the
+	 *            name must match a Catalog Name held in the database, with ""
+	 *            used to retrieve those without a Catalog Name.
+	 * @param schema
+	 *            a Schema Name. <code>null</code> is used to imply no
+	 *            narrowing of the search using Schema Name. Otherwise, the name
+	 *            must match a Schema name in the database, with "" used to
+	 *            retrieve those without a Schema name.
+	 * @param table
+	 *            a table name, which must match the name of a table in the
+	 *            database
+	 * @return a ResultSet containing the list of primary key columns as rows in
+	 *         the format defined above.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public ResultSet getImportedKeys(String catalog, String schema, String table)
+			throws SQLException;
+
+	/**
+	 * Answers a list of indices and statistics for a specified table.
+	 * <p>
+	 * The list is returned as a ResultSet, with one row for each index or
+	 * statistic. The list is ordered by NON_UNIQUE, TYPE, INDEX_NAME, and
+	 * ORDINAL_POSITION. Each row has the following format:
+	 * <ol>
+	 * <li><code>TABLE_CAT</code> - String - table catalog name (possibly
+	 * <code>null</code>)</li>
+	 * <li><code>TABLE_SCHEM</code> - String - Table Schema name (possibly
+	 * <code>null</code>) </li>
+	 * <li><code>TABLE_NAME</code> - String - The Table name </li>
+	 * <li><code>NON_UNIQUE</code> - boolean - <code>true</code> when index
+	 * values can be non-unique. Must be <code>false</code> when TYPE is
+	 * tableIndexStatistic</li>
+	 * <li><code>INDEX_QUALIFIER</code> - String : index catalog name.
+	 * <code>null</code> when TYPE is 'tableIndexStatistic'</li>
+	 * <li><code>INDEX_NAME</code> - String : index name. <code>null</code>
+	 * when TYPE is 'tableIndexStatistic'</li>
+	 * <li>TYPE - short - the index type. One of:
+	 * <ul>
+	 * <li>DatabaseMetaData.tableIndexStatistic - table statistics returned
+	 * with Index descriptions</li>
+	 * <li>DatabaseMetaData.tableIndexClustered - a clustered Index</li>
+	 * <li>DatabaseMetaData.tableIndexHased - a hashed Index</li>
+	 * <li>DatabaseMetaData.tableIndexOther - other style of Index</li>
+	 * </ul>
+	 * </li>
+	 * <li>ORDINAL_POSITION - short - column sequence within Index. 0 when TYPE
+	 * is tableIndexStatistic </li>
+	 * <li><code>COLUMN_NAME</code> - String - the column name.
+	 * <code>null</code> when TYPE is tableIndexStatistic</li>
+	 * <li>ASC_OR_DESC - String - column sort sequence. <code>null</code> if
+	 * sequencing not supported or TYPE is tableIndexStatistic; otherwise "A"
+	 * means sort ascending and "D" means sort descending. </li>
+	 * <li>CARDINALITY - int - Number of unique values in the Index. If TYPE is
+	 * tableIndexStatistic, this is number of rows in the table.</li>
+	 * <li>PAGES - int - Number of pages for current Index. If TYPE is
+	 * tableIndexStatistic, this is number of pages used for the table.</li>
+	 * <li>FILTER_CONDITION - String - Filter condition. (possibly null) </li>
+	 * </ol>
+	 * 
+	 * @param catalog
+	 *            a Catalog Name. null is used to imply no narrowing of the
+	 *            search using Catalog Name. Otherwise, the name must match a
+	 *            Catalog Name held in the database, with "" used to retrieve
+	 *            those without a Catalog Name.
+	 * @param schema
+	 *            a Schema Name. null is used to imply no narrowing of the
+	 *            search using Schema Name. Otherwise, the name must match a
+	 *            Schema name in the database, with "" used to retrieve those
+	 *            without a Schema name.
+	 * @param table
+	 *            a table name, which must match the name of a table in the
+	 *            database
+	 * @param unique
+	 *            <code>true</code> means only return indices for unique
+	 *            values, <code>false</code> implies that they can be returned
+	 *            even if not unique.
+	 * @param approximate
+	 *            <code>true</code> implies that the list can contain
+	 *            approximate or "out of data" values, <code>false</code>
+	 *            implies that all values must be precisely accurate
+	 * @return a ResultSet containing the list of indices and statistics for the
+	 *         table, in the format defined above.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public ResultSet getIndexInfo(String catalog, String schema, String table,
+			boolean unique, boolean approximate) throws SQLException;
+
+	/**
+	 * Answers this driver's major JDBC version number.
+	 * 
+	 * @return the major JDBC version number
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getJDBCMajorVersion() throws SQLException;
+
+	/**
+	 * Answers the minor JDBC version number for this driver.
+	 * 
+	 * @return the Minor JDBC Version Number
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getJDBCMinorVersion() throws SQLException;
+
+	/**
+	 * Get the maximum number of hex characters in an in-line binary literal for
+	 * this database.
+	 * 
+	 * @return the maximum number of hex characters in an in-line binary literal.
+	 *         If the number is unlimited then the result is zero.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getMaxBinaryLiteralLength() throws SQLException;
+
+	/**
+	 * Answers the maximum size of a Catalog name in this database.
+	 * 
+	 * @return the maximum size in characters for a Catalog name. If the limit
+	 *         is unknown, or the value is unlimited, then the result is zero.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getMaxCatalogNameLength() throws SQLException;
+
+	/**
+	 * Answers the maximum size for a character literal in this database.
+	 * 
+	 * @return the maximum size in characters for a character literal. If the
+	 *         limit is unknown, or the value is unlimited, then the result is
+	 *         zero.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getMaxCharLiteralLength() throws SQLException;
+
+	/**
+	 * Answers the maximum size for a Column name for this database.
+	 * 
+	 * @return the maximum number of characters for a Column name. If the limit
+	 *         is unknown, or the value is unlimited, then the result is zero.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getMaxColumnNameLength() throws SQLException;
+
+	/**
+	 * Get the maximum number of columns in a GROUP BY clause for this database.
+	 * 
+	 * @return the maximum number of columns in a GROUP BY clause. If the limit
+	 *         is unknown, or the value is unlimited, then the result is zero.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getMaxColumnsInGroupBy() throws SQLException;
+
+	/**
+	 * Answers the maximum number of columns in an Index for this database.
+	 * 
+	 * @return the maximum number of columns in an Index. If the limit is
+	 *         unknown, or the value is unlimited, then the result is zero.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getMaxColumnsInIndex() throws SQLException;
+
+	/**
+	 * Answers the maximum number of columns in an ORDER BY clause for this
+	 * database.
+	 * 
+	 * @return the maximum number of columns in an ORDER BY clause. If the limit
+	 *         is unknown, or the value is unlimited, then the result is zero.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getMaxColumnsInOrderBy() throws SQLException;
+
+	/**
+	 * Answers the maximum number of columns in a SELECT list for this database.
+	 * 
+	 * @return the maximum number of columns in a SELECT list. If the limit is
+	 *         unknown, or the value is unlimited, then the result is zero.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getMaxColumnsInSelect() throws SQLException;
+
+	/**
+	 * Answers the maximum number of columns in a table for this database.
+	 * 
+	 * @return the maximum number of columns in a table. If the limit is
+	 *         unknown, or the value is unlimited, then the result is zero.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getMaxColumnsInTable() throws SQLException;
+
+	/**
+	 * Answers the database's maximum number of concurrent connections.
+	 * 
+	 * @return the maximum number of connections. If the limit is unknown, or
+	 *         the value is unlimited, then the result is zero.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getMaxConnections() throws SQLException;
+
+	/**
+	 * Answers the maximum length of a cursor name for this database.
+	 * 
+	 * @return the maximum number of characters in a cursor name. If the limit
+	 *         is unknown, or the value is unlimited, then the result is zero.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getMaxCursorNameLength() throws SQLException;
+
+	/**
+	 * Answers the maximum length in bytes for an Index for this database. This
+	 * covers all the parts of a composite index.
+	 * 
+	 * @return the maximum length in bytes for an Index. If the limit is
+	 *         unknown, or the value is unlimited, then the result is zero.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getMaxIndexLength() throws SQLException;
+
+	/**
+	 * Answers the maximum number of characters for a procedure name in this
+	 * database.
+	 * 
+	 * @return the maximum number of character for a procedure name. If the
+	 *         limit is unknown, or the value is unlimited, then the result is
+	 *         zero.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getMaxProcedureNameLength() throws SQLException;
+
+	/**
+	 * Answers the maximum number of bytes within a single row for this
+	 * database.
+	 * 
+	 * @return the maximum number of bytes for a single row. If the limit is
+	 *         unknown, or the value is unlimited, then the result is zero.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getMaxRowSize() throws SQLException;
+
+	/**
+	 * Answers the maximum number of characters in a schema name for this
+	 * database.
+	 * 
+	 * @return the maximum number of characters in a Schema name. If the limit
+	 *         is unknown, or the value is unlimited, then the result is zero.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getMaxSchemaNameLength() throws SQLException;
+
+	/**
+	 * Answers the maximum number of characters in an SQL statement for this
+	 * database.
+	 * 
+	 * @return the maximum number of characters in an SQL statement. If the
+	 *         limit is unknown, or the value is unlimited, then the result is
+	 *         zero.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getMaxStatementLength() throws SQLException;
+
+	/**
+	 * Get the maximum number of simultaneously open active statements for this
+	 * database.
+	 * 
+	 * @return the maximum number of open active statements. If the limit is
+	 *         unknown, or the value is unlimited, then the result is zero.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getMaxStatements() throws SQLException;
+
+	/**
+	 * Answers the maximum size for a table name in the database.
+	 * 
+	 * @return the maximum size in characters for a table name. If the limit is
+	 *         unknown, or the value is unlimited, then the result is zero.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getMaxTableNameLength() throws SQLException;
+
+	/**
+	 * Answers the maximum number of tables permitted in a SELECT statement for
+	 * the database.
+	 * 
+	 * @return the maximum number of tables permitted in a SELECT statement. If
+	 *         the limit is unknown, or the value is unlimited, then the result
+	 *         is zero.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getMaxTablesInSelect() throws SQLException;
+
+	/**
+	 * Answers the maximum number of characters in a user name for the database.
+	 * 
+	 * @return the maximum number of characters in a user name. If the limit is
+	 *         unknown, or the value is unlimited, then the result is zero.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getMaxUserNameLength() throws SQLException;
+
+	/**
+	 * Answers a list of the math functions available with this database. These
+	 * are used in the JDBC function escape clause and are the Open Group CLI
+	 * math function names.
+	 * 
+	 * @return a String which contains the list of Math functions as a comma
+	 *         separated list.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public String getNumericFunctions() throws SQLException;
+
+	/**
+	 * Answers a list of the primary key columns of a specified table.
+	 * <p>
+	 * The list is returned as a ResultSet with one row for each primary key
+	 * column, ordered by <code>COLUMN_NAME</code>, with each row having the
+	 * structure as follows:
+	 * <ol>
+	 * <li><code>TABLE_CAT</code> - String - table catalog name (possibly
+	 * null)</li>
+	 * <li><code>TABLE_SCHEM</code> - String - Table Schema name (possibly
+	 * null) </li>
+	 * <li><code>TABLE_NAME</code> - String - The Table name </li>
+	 * <li><code>COLUMN_NAME</code> - String - The Column name </li>
+	 * <li><code>KEY_SEQ</code> - short - the sequence number for this column
+	 * in the primary key</li>
+	 * <li><code>PK_NAME</code> - String - the primary key name (possibly
+	 * null)</li>
+	 * </ol>
+	 * 
+	 * @param catalog
+	 *            a Catalog Name. <code>null</code> is used to imply no
+	 *            narrowing of the search using Catalog Name. Otherwise, the
+	 *            name must match a Catalog Name held in the database, with the
+	 *            empty string used to retrieve those without a Catalog Name.
+	 * @param schema
+	 *            a Schema Name. <code>null</code> is used to imply no
+	 *            narrowing of the search using Schema Name. Otherwise, the name
+	 *            must match a Schema name in the database, with the empty
+	 *            string used to retrieve those without a Schema name.
+	 * @param table
+	 *            the name of a table, which must match the name of a table in
+	 *            the database
+	 * @return a ResultSet containing the list of keys in the format defined
+	 *         above
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public ResultSet getPrimaryKeys(String catalog, String schema, String table)
+			throws SQLException;
+
+	/**
+	 * Answers a list of parameter and result columns for the stored procedures
+	 * belonging to a specified Catalog.
+	 * <p>
+	 * The list is returned as a ResultSet with one row for each parameter or
+	 * result column. The data is ordered by PROCEDURE_SCHEM and PROCEDURE_NAME,
+	 * while for each procedure, the return value (if any) is first, followed by
+	 * the parameters in the order they appear in the stored procedure call,
+	 * followed by ResultSet columns in column number order. Each row has the
+	 * following structure:
+	 * <ol>
+	 * <li>PROCEDURE_CAT - String - the procedure catalog name</li>
+	 * <li>PROCEDURE_SCHEM - String - the procedure schema name (possibly null)
+	 * </li>
+	 * <li>PROCEDURE_NAME - String - the procedure name</li>
+	 * <li><code>COLUMN_NAME</code> - String - the name of the column</li>
+	 * <li>COLUMN_TYPE - short - the kind of column or parameter, as follows:
+	 * <ul>
+	 * <li>DatabaseMetaData.procedureColumnUnknown - type unknown</li>
+	 * <li>DatabaseMetaData.procedureColumnIn - an IN parameter</li>
+	 * <li>DatabaseMetaData.procedureColumnInOut - an INOUT parameter</li>
+	 * <li>DatabaseMetaData.procedureColumnOut - an OUT parameter</li>
+	 * <li>DatabaseMetaData.procedureColumnReturn - a return value</li>
+	 * <li>DatabaseMetaData.procedureReturnsResult - a result column in a
+	 * result set</li>
+	 * </ul>
+	 * </li>
+	 * <li><code>DATA_TYPE</code> - int - the SQL type of the data, as in
+	 * <code>java.sql.Types</code> </li>
+	 * <li><code>TYPE_NAME</code> - String - the SQL type name, for a UDT it
+	 * is fully qualified</li>
+	 * <li>PRECISION - int - the precision</li>
+	 * <li>LENGTH - int - the length of the data in bytes </li>
+	 * <li>SCALE - short - the scale for numeric types</li>
+	 * <li>RADIX - short - the Radix for numeric data (typically 2 or 10) </li>
+	 * <li>NULLABLE - short - can the data contain null:
+	 * <ul>
+	 * <li>DatabaseMetaData.procedureNoNulls - <code>NULL</code>s not
+	 * permitted</li>
+	 * <li>DatabaseMetaData.procedureNullable - <code>NULL</code>s are
+	 * permitted </li>
+	 * <li>DatabaseMetaData.procedureNullableUnknown - <code>NULL</code>
+	 * status unknown </li>
+	 * </ul>
+	 * </li>
+	 * <li><code>REMARKS</code> - String - an explanatory comment about the
+	 * data item </li>
+	 * </ol>
+	 * 
+	 * @param catalog
+	 *            a Catalog Name. null is used to imply no narrowing of the
+	 *            search using Catalog Name. Otherwise, the name must match a
+	 *            Catalog Name held in the database, with "" used to retrieve
+	 *            those without a Catalog Name.
+	 * @param schemaPattern
+	 *            a Schema Name Pattern. null is used to imply no narrowing of
+	 *            the search using Schema Name. Otherwise, the name must match a
+	 *            Schema name in the database, with "" used to retrieve those
+	 *            without a Schema name.
+	 * @param procedureNamePattern
+	 *            a pattern that must match the name of the procedure stored in
+	 *            the database
+	 * @param columnNamePattern
+	 *            a column name pattern. The name must match the column name
+	 *            stored in the database.
+	 * @return a ResultSet with the list of parameter and result columns in the
+	 *         format defined above
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public ResultSet getProcedureColumns(String catalog, String schemaPattern,
+			String procedureNamePattern, String columnNamePattern)
+			throws SQLException;
+
+	/**
+	 * Answers a list of the stored procedures available in a specified catalog.
+	 * <p>
+	 * The list is returned as a ResultSet with one row for each stored
+	 * procedure, ordered by PROCEDURE_SCHEME and PROCEDURE_NAME, with the data
+	 * in each row as follows:
+	 * <ol>
+	 * <li><code>PROCEDURE_CAT</code> - String : the procedure catalog name</li>
+	 * <li><code>PROCEDURE_SCHEM</code> - String : the procedure schema name
+	 * (possibly <code>null</code>) </li>
+	 * <li><code>PROCEDURE_NAME</code> - String : the procedure name</li>
+	 * <li><code>Reserved</code></li>
+	 * <li><code>Reserved</code></li>
+	 * <li><code>Reserved</code></li>
+	 * <li><code>REMARKS</code> - String - information about the procedure</li>
+	 * <li><code>PROCEDURE_TYPE</code> - short : one of:
+	 * <ul>
+	 * <li>DatabaseMetaData.procedureResultUnknown - procedure may return a
+	 * result </li>
+	 * <li>DatabaseMetaData.procedureNoResult - procedure does not return a
+	 * result</li>
+	 * <li>DatabaseMetaData.procedureReturnsResult - procedure definitely
+	 * returns a result</li>
+	 * </ul>
+	 * </li>
+	 * </ol>
+	 * 
+	 * @param catalog
+	 *            a Catalog Name. null is used to imply no narrowing of the
+	 *            search using Catalog Name. Otherwise, the name must match a
+	 *            Catalog Name held in the database, with "" used to retrieve
+	 *            those without a Catalog Name.
+	 * @param schemaPattern
+	 *            a Schema Name Pattern. null is used to imply no narrowing of
+	 *            the search using Schema Name. Otherwise, the name must match a
+	 *            Schema name in the database, with "" used to retrieve those
+	 *            without a Schema name.
+	 * @param procedureNamePattern
+	 *            a procedure name pattern, which must match the procedure name
+	 *            stored in the database
+	 * @return a ResultSet where each row is a description of a stored procedure
+	 *         in the format defined above.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public ResultSet getProcedures(String catalog, String schemaPattern,
+			String procedureNamePattern) throws SQLException;
+
+	/**
+	 * Answers the database vendor's preferred name for "procedure".
+	 * 
+	 * @return a String with the vendor's preferred name for "procedure"
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public String getProcedureTerm() throws SQLException;
+
+	/**
+	 * Answers the result set's default hold-ability.
+	 * 
+	 * @return one of <code>ResultSet.HOLD_CURSORS_OVER_COMMIT</code> or
+	 *         <code>ResultSet.CLOSE_CURSORS_AT_COMMIT</code>
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getResultSetHoldability() throws SQLException;
+
+	/**
+	 * Answers a list of the schema names in the database. The list is returned
+	 * as a ResultSet, ordered by the Schema name, with one row per Schema in
+	 * the following format:
+	 * <ol>
+	 * <li><code>TABLE_SCHEM</code> - String - the Schema name</li>
+	 * <li><code>TABLE_CAT</code>ALOG - String - the Catalog name (possibly
+	 * null) </li>
+	 * </ol>
+	 * 
+	 * @return a ResultSet with one row for each schema in the format defined
+	 *         above.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public ResultSet getSchemas() throws SQLException;
+
+	/**
+	 * Answers the database vendor's preferred term for "schema".
+	 * 
+	 * @return a String which is the vendor's preferred term for schema
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public String getSchemaTerm() throws SQLException;
+
+	/**
+	 * Returns the string that is used to escape wildcard characters. This
+	 * string is used to escape the '_' and '%' wildcard characters in catalog
+	 * search strings which are a pattern and so which use the wildcard
+	 * characters. '_' is used to represent any single character wile '%' is
+	 * used for a sequence of zero or more characters.
+	 * 
+	 * @return a String used to escape the wildcard characters
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public String getSearchStringEscape() throws SQLException;
+
+	/**
+	 * Answers a list of all the SQL keywords that are NOT also SQL92 keywords
+	 * for the database.
+	 * 
+	 * @return a String containing the list of SQL keywords in a comma separated
+	 *         format.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public String getSQLKeywords() throws SQLException;
+
+	/**
+	 * States the type of SQLState value returned by SQLException.getSQLState.
+	 * This can either be the X/Open (now known as Open Group) SQL CLI form or
+	 * the SQL99 form.
+	 * 
+	 * @return an integer, which is either DatabaseMetaData.sqlStateSQL99 or
+	 *         DatabaseMetaData.sqlStateXOpen.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public int getSQLStateType() throws SQLException;
+
+	/**
+	 * Answers a list of string functions available with the database. These
+	 * functions are used in JDBC function escape clause and follow the Open
+	 * Group CLI string function names definition.
+	 * 
+	 * @return a String containing the list of string functions in comma
+	 *         separated format.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public String getStringFunctions() throws SQLException;
+
+	/**
+	 * Answers a listing of the hierarchies of tables in a specified schema in
+	 * the database.
+	 * <p>
+	 * The listing only contains entries for tables that have a super table.
+	 * Super and sub tables must be defined in the same Catalog and Schema. The
+	 * list is returned as a ResultSet, with one row for each table that has a
+	 * super table, in the following format:
+	 * <ol>
+	 * <li><code>TABLE_CAT</code> - String - table catalog name (possibly
+	 * null)</li>
+	 * <li><code>TABLE_SCHEM</code> - String - Table Schema name (possibly
+	 * null) </li>
+	 * <li><code>TABLE_NAME</code> - String - The Table name </li>
+	 * <li>SUPER<code>TABLE_NAME</code> - String - The Super Table name
+	 * </li>
+	 * </ol>
+	 * 
+	 * @param catalog
+	 *            a Catalog Name. null is used to imply no narrowing of the
+	 *            search using Catalog Name. Otherwise, the name must match a
+	 *            Catalog Name held in the database, with "" used to retrieve
+	 *            those without a Catalog Name.
+	 * @param schemaPattern
+	 *            a Schema Name Pattern. null is used to imply no narrowing of
+	 *            the search using Schema Name. Otherwise, the name must match a
+	 *            Schema name in the database, with "" used to retrieve those
+	 *            without a Schema name.
+	 * @param tableNamePattern
+	 *            a Table Name, which should match the Table name as stored in
+	 *            the database. it may be a fully qualified name. If it is fully
+	 *            qualified the Catalog Name and Schema Name parameters are
+	 *            ignored.
+	 * @return a ResultSet with one row for each table which has a super table,
+	 *         in the format defined above. An empty ResultSet is returned if
+	 *         the database does not support table hierarchies.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public ResultSet getSuperTables(String catalog, String schemaPattern,
+			String tableNamePattern) throws SQLException;
+
+	/**
+	 * Answers the User Defined Type (UDT) hierarchies for a given schema. Only
+	 * the immediate parent/child relationship is described. If a UDT does not
+	 * have a direct supertype, it is not listed.
+	 * <p>
+	 * The listing is returned as a ResultSet where there is one row for a
+	 * specific UDT which describes its supertype, with the data organised in
+	 * columns as follows:
+	 * <ol>
+	 * <li><code>TYPE_CAT</code> - String - the UDT Catalog name (possibly
+	 * null)</li>
+	 * <li><code>TYPE_SCHEM</code> - String - the UDT Schema name (possibly
+	 * null) </li>
+	 * <li><code>TYPE_NAME</code> - String - the UDT type name </li>
+	 * <li>SUPER<code>TYPE_CAT</code> - String - direct supertype's Catalog
+	 * name (possibly null)</li>
+	 * <li>SUPER<code>TYPE_SCHEM</code> - String - direct supertype's Schema
+	 * name (possibly null) </li>
+	 * <li>SUPER<code>TYPE_NAME</code> - String - direct supertype's name
+	 * </li>
+	 * </ol>
+	 * 
+	 * @param catalog
+	 *            the Catalog name. "" means get the UDTs without a catalog.
+	 *            null means don't use the catalog name to restrict the search.
+	 * @param schemaPattern
+	 *            the Schema pattern name. "" means get the UDT's without a
+	 *            schema.
+	 * @param typeNamePattern
+	 *            the UDT name pattern. This may be a fully qualified name. When
+	 *            a fully qualified name is specified, the Catalog name and
+	 *            Schema name parameters are ignored.
+	 * @return a ResultSet in which each row gives information about a
+	 *         particular UDT in the format defined above. An empty ResultSet is
+	 *         returned for a database that does not support type hierarchies.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public ResultSet getSuperTypes(String catalog, String schemaPattern,
+			String typeNamePattern) throws SQLException;
+
+	/**
+	 * Answers a list of system functions available with the database. These are
+	 * names used in the JDBC function escape clause and are Open Group CLI
+	 * function names.
+	 * 
+	 * @return a String containing the list of system functions in a comma
+	 *         separated format
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public String getSystemFunctions() throws SQLException;
+
+	/**
+	 * Answers a description of access rights for each table present in a
+	 * catalog. Table privileges can apply to one or more columns in the table -
+	 * but are not guaranteed to apply to all columns.
+	 * <p>
+	 * The privileges are returned as a ResultSet, with one row for each
+	 * privilege, ordered by <code>TABLE_SCHEM</code>,
+	 * <code>TABLE_NAME</code>, PRIVILEGE, and each row has data as defined
+	 * in the following column definitions:
+	 * <ol>
+	 * <li><code>TABLE_CAT</code> - String - table catalog name (possibly
+	 * null)</li>
+	 * <li><code>TABLE_SCHEM</code> - String - Table Schema name (possibly
+	 * null) </li>
+	 * <li><code>TABLE_NAME</code> - String - The Table name </li>
+	 * <li>GRANTOR - String - who granted the access</li>
+	 * <li>GRANTEE - String - who received the access grant </li>
+	 * <li>PRIVILEGE - String - the type of access granted - one of SELECT,
+	 * INSERT, UPDATE, REFERENCES,... </li>
+	 * <li>IS_GRANTABLE - String - "YES" implies the grantee can grant access
+	 * to others, "NO" implies guarantee cannot grant access to others, null means
+	 * this status is unknown</li>
+	 * </ol>
+	 * 
+	 * @param catalog
+	 *            a Catalog Name. null is used to imply no narrowing of the
+	 *            search using Catalog Name. Otherwise, the name must match a
+	 *            Catalog Name held in the database, with "" used to retrieve
+	 *            those without a Catalog Name.
+	 * @param schemaPattern
+	 *            a Schema Name Pattern. null is used to imply no narrowing of
+	 *            the search using Schema Name. Otherwise, the name must match a
+	 *            Schema name in the database, with "" used to retrieve those
+	 *            without a Schema name.
+	 * @param tableNamePattern
+	 *            a Table Name, which should match the Table name as stored in
+	 *            the database.
+	 * @return a ResultSet containing a list with one row for each table in the
+	 *         format defined above.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public ResultSet getTablePrivileges(String catalog, String schemaPattern,
+			String tableNamePattern) throws SQLException;
+
+	/**
+	 * Answers a description of the tables in a specified catalog.
+	 * <p>
+	 * The descriptions are returned as rows in a ResultSet, one row for each
+	 * Table. The ResultSet is ordered by <code>TABLE_TYPE</code>,
+	 * <code>TABLE_SCHEM</code> and <code>TABLE_NAME</code>. Each row in
+	 * the ResultSet consists of a series of columns as follows:
+	 * <ol>
+	 * <li><code>TABLE_CAT</code> - String - table catalog name (possibly
+	 * null)</li>
+	 * <li><code>TABLE_SCHEM</code> - String - Table Schema name (possibly
+	 * null) </li>
+	 * <li><code>TABLE_NAME</code> - String - The Table name </li>
+	 * <li><code>TABLE_TYPE</code> - String - Typical names include "TABLE",
+	 * "VIEW", "SYSTEM TABLE", "ALIAS", "SYNONYM", "GLOBAL TEMPORARY"</li>
+	 * <li><code>REMARKS</code> - String - A comment describing the table
+	 * </li>
+	 * <li><code>TYPE_CAT</code> - String - the 'Types' catalog(possibly
+	 * null)</li>
+	 * <li><code>TYPE_SCHEM</code> - String - the 'Types' schema(possibly
+	 * null) </li>
+	 * <li><code>TYPE_NAME</code> - String - the 'Types' name (possibly null)
+	 * </li>
+	 * <li><code>SELF_REFERENCING_COL_NAME</code> - String - the name of a
+	 * designated identifier column in a typed table (possibly null) </li>
+	 * <li>REF_GENERATION - String - one of the following values : "SYSTEM" |
+	 * "USER" | "DERIVED" - specifies how values in the
+	 * <code>SELF_REFERENCING_COL_NAME</code> are created (possibly null)
+	 * </li>
+	 * </ol>
+	 * 
+	 * @param catalog
+	 *            a Catalog Name. null is used to imply no narrowing of the
+	 *            search using Catalog Name. Otherwise, the name must match a
+	 *            Catalog Name held in the database, with "" used to retrieve
+	 *            those without a Catalog Name.
+	 * @param schemaPattern
+	 *            a Schema Name Pattern. null is used to imply no narrowing of
+	 *            the search using Schema Name. Otherwise, the name must match a
+	 *            Schema name in the database, with "" used to retrieve those
+	 *            without a Schema name.
+	 * @param tableNamePattern
+	 *            a Table Name, which should match the Table name as stored in
+	 *            the database.
+	 * @param types
+	 *            a list of table types to include in the list. null implies
+	 *            list all types.
+	 * @return a ResultSet with one row per table in the format defined above.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public ResultSet getTables(String catalog, String schemaPattern,
+			String tableNamePattern, String[] types) throws SQLException;
+
+	/**
+	 * Answers a list of table types supported by the database.
+	 * <p>
+	 * The list is returned as a ResultSet with one row per table type, ordered
+	 * by the table type. The information in the ResultSet is structured into a
+	 * single column per row, as follows:
+	 * <ol>
+	 * <li><code>TABLE_TYPE</code> - String - the Table Type. Typical names
+	 * include "TABLE", "VIEW", "SYSTEM TABLE", "ALIAS", "SYNONYM", "GLOBAL
+	 * TEMPORARY" </li>
+	 * </ol>
+	 * 
+	 * @return a ResultSet with one row per table type in the format defined
+	 *         above.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public ResultSet getTableTypes() throws SQLException;
+
+	/**
+	 * Answers a list of time and date functions available for the database.
+	 * 
+	 * @return a String contain a comma separated list of the time and date
+	 *         functions.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public String getTimeDateFunctions() throws SQLException;
+
+	/**
+	 * Get a list of the standard SQL Types supported by this database. The list
+	 * is returned as a ResultSet, with one row for each type, ordered by the
+	 * <code>DATA_TYPE</code> value, where the data in each row is structured
+	 * into the following columns:
+	 * <ol>
+	 * <li><code>TYPE_NAMR</code> - String : the Type name</li>
+	 * <li><code>DATA_TYPE</code> - int : the SQL data type value as defined
+	 * in <code>java.sql.Types</code></li>
+	 * <li><code>PRECISION</code> - int - the maximum precision of the type</li>
+	 * <li><code>LITERAL_PREFIX</code> - String : the prefix to be used when
+	 * quoting a literal value (possibly <code>null</code>)</li>
+	 * <li><code>LITERAL_SUFFIX</code> - String : the suffix to be used when
+	 * quoting a literal value (possibly <code>null</code>)</li>
+	 * <li><code>CREATE_PARAMS</code> - String : params used when creating
+	 * the type (possibly <code>null</code>)</li>
+	 * <li><code>NULLABLE</code> - short : shows if the value is null-able:
+	 * <ul>
+	 * <li>DatabaseMetaData.typeNoNulls : <code>NULL</code>s not permitted</li>
+	 * <li>DatabaseMetaData.typeNullable : <code>NULL</code>s are permitted
+	 * </li>
+	 * <li>DatabaseMetaData.typeNullableUnknown : <code>NULL</code> status
+	 * unknown </li>
+	 * </ul>
+	 * </li>
+	 * <li>CASE_SENSITIVE - boolean : true if the type is case sensitive</li>
+	 * <li>SEARCHABLE - short : how this type can be used with WHERE clauses:
+	 * <ul>
+	 * <li>DatabaseMetaData.typePredNone - cannot be used </li>
+	 * <li>DatabaseMetaData.typePredChar - support for WHERE...LIKE only</li>
+	 * <li>DatabaseMetaData.typePredBasic - support except for WHERE...LIKE</li>
+	 * <li>DatabaseMetaData.typeSearchable - support for all WHERE clauses</li>
+	 * </ul>
+	 * </li>
+	 * <li>UNSIGNED_ATTRIBUTE - boolean - the type is unsigned or not </li>
+	 * <li>FIXED_PREC_SCALE - boolean - fixed precision = it can be used as a
+	 * money value </li>
+	 * <li>AUTO_INCREMENT - boolean - can be used as an auto-increment value
+	 * </li>
+	 * <li>LOCAL_<code>TYPE_NAME</code> - String - a localized version of
+	 * the type name (possibly null)</li>
+	 * <li>MINIMUM_SCALE - short - the minimum scale supported </li>
+	 * <li>MAXIMUM_SCALE - short - the maximum scale supported </li>
+	 * <li>SQL_<code>DATA_TYPE</code> - int - not used </li>
+	 * <li>SQL_DATETIME_SUB - int - not used </li>
+	 * <li>NUM_PREC_RADIX - int - number radix (typically 2 or 10) </li>
+	 * </ol>
+	 * 
+	 * @return a ResultSet which is structured as described above
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public ResultSet getTypeInfo() throws SQLException;
+
+	/**
+	 * Answers a description of the User Defined Types (UDTs) defined in a
+	 * given schema, which includes the types DISTINCT, STRUCT and JAVA_OBJECT.
+	 * <p>
+	 * The types matching the supplied the specified Catalog, Schema, Type Name
+	 * and Type are returned as rows in a ResultSet with columns of information
+	 * as follows:
+	 * <ol>
+	 * <li><code>TABLE_CAT</code> - String - Catalog name (possibly null)</li>
+	 * <li><code>TABLE_SCHEM</code> - String - Schema name (possibly null)
+	 * </li>
+	 * <li><code>TABLE_NAME</code> - String - The Table name </li>
+	 * <li><code>CLASS_NAME</code> - String - The Java class name</li>
+	 * <li><code>DATA_TYPE</code> - int - The SQL type as specified in
+	 * <code>java.sql.Types</code>. One of DISTINCT, STRUCT and JAVA_OBJECT</li>
+	 * <li><code>REMARKS</code> - String - A comment which describes the type
+	 * </li>
+	 * <li><code>BASE_TYPE</code> - short - A type code. For a DISTINCT type,
+	 * the source type. For a structured type this is the type that implements
+	 * the user generated reference type of the
+	 * <code>SELF_REFERENCING_COLUMN</code>. This is defined in
+	 * <code>java.sql.Types</code>, and will be <code>null</code> if the
+	 * <code>DATA_TYPE</code> does not match these criteria.</li>
+	 * </ol>
+	 * If the driver does not support UDTs, the ResultSet will be empty.
+	 * 
+	 * @param catalog
+	 *            a Catalog Name. null is used to imply no narrowing of the
+	 *            search using Catalog Name. Otherwise, the name must match a
+	 *            Catalog Name held in the database, with "" used to retrieve
+	 *            those without a Catalog Name.
+	 * @param schemaPattern
+	 *            a Schema Name Pattern. <code>null</code> is used to imply no
+	 *            narrowing of the search using Schema Name. Otherwise, the name
+	 *            must match a Schema name in the database, with "" used to
+	 *            retrieve those without a Schema name.
+	 * @param typeNamePattern
+	 *            a Type Name, which should match a Type name as stored in the
+	 *            database. It may be fully qualified.
+	 * @param types
+	 *            a list of the UDT types to include in the list - one of
+	 *            DISTINCT, STRUCT or JAVA_OBJECT.
+	 * @return a ResultSet in the format described above
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public ResultSet getUDTs(String catalog, String schemaPattern,
+			String typeNamePattern, int[] types) throws SQLException;
+
+	/**
+	 * Answers the URL for this database.
+	 * 
+	 * @return the URL for the database. <code>null</code> if it cannot be
+	 *         generated.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public String getURL() throws SQLException;
+
+	/**
+	 * Determine the user name as known by the database.
+	 * 
+	 * @return the user name
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public String getUserName() throws SQLException;
+
+	/**
+	 * Answers which of a table's columns are automatically updated when any
+	 * value in a row is updated.
+	 * <p>
+	 * The result is laid-out in the following columns:
+	 * <ol>
+	 * <li><code>SCOPE</code> - short - not used </li>
+	 * <li><code>COLUMN_NAME</code> - String - Column name</li>
+	 * <li><code>DATA_TYPE</code> - int - The SQL data type, as defined in
+	 * <code>java.sql.Types</code> </li>
+	 * <li><code>TYPE_NAME</code> - String - The SQL type name, data source
+	 * dependent </li>
+	 * <li><code>COLUMN_SIZE</code> - int - Precision for numeric types </li>
+	 * <li><code>BUFFER_LENGTH</code> - int - Length of a column value in
+	 * bytes </li>
+	 * <li><code>DECIMAL_DIGITS</code> - short - Number of digits after the
+	 * decimal point </li>
+	 * <li><code>PSEUDO_COLUMN</code> - short - If this is a pseudo-column
+	 * (for example, an Oracle ROWID):
+	 * <ul>
+	 * <li>DatabaseMetaData.bestRowUnknown - don't know whether this is a
+	 * pseudo column</li>
+	 * <li>DatabaseMetaData.bestRowNotPseudo - column is not pseudo</li>
+	 * <li>DatabaseMetaData.bestRowPseudo - column is a pseudo column</li>
+	 * </ul>
+	 * </li>
+	 * </ol>
+	 * 
+	 * @param catalog
+	 *            a Catalog Name. <code>null</code> is used to imply no
+	 *            narrowing of the search using Catalog Name. Otherwise, the
+	 *            name must match a Catalog Name held in the database, with ""
+	 *            used to retrieve those without a Catalog Name.
+	 * @param schema
+	 *            a Schema Name Pattern. <code>null</code> is used to imply no
+	 *            narrowing of the search using Schema Name. Otherwise, the name
+	 *            must match a Schema name in the database, with "" used to
+	 *            retrieve those without a Schema name.
+	 * @param table
+	 *            a table name. It must match the name of a table in the
+	 *            database.
+	 * @return a ResultSet containing the descriptions, one row for each column,
+	 *         in the format defined above.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public ResultSet getVersionColumns(String catalog, String schema,
+			String table) throws SQLException;
+
+	/**
+	 * Determine if a visible row insert can be detected by calling
+	 * ResultSet.rowInserted.
+	 * 
+	 * @param type
+	 *            the ResultSet type. This may be one of
+	 *            <code>ResultSet.TYPE_SCROLL_SENSITIVE</code> or
+	 *            <code>ResultSet.TYPE_SCROLL_INSENSITIVE</code> or
+	 *            <code>ResultSet.TYPE_FORWARD_ONLY</code>,
+	 * @return <code>true</code> if ResultSet.rowInserted detects a visible
+	 *         row insert otherwise <code>false</code>.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public boolean insertsAreDetected(int type) throws SQLException;
+
+	/**
+	 * Determine whether a fully qualified table name is prefixed or suffixed to
+	 * a fully qualified table name.
+	 * 
+	 * @return <code>true</code> if the catalog appears at the start of a
+	 *         fully qualified table name, <code>false</code> otherwise.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public boolean isCatalogAtStart() throws SQLException;
+
+	/**
+	 * Determine if the database is in read-only mode.
+	 * 
+	 * @return <code>true</code> if the database is in read-only mode,
+	 *         <code>false</code> otherwise.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public boolean isReadOnly() throws SQLException;
+
+	/**
+	 * Determine if updates are made to a copy of, or directly on, Large Objects
+	 * (LOBs).
+	 * 
+	 * @return <code>true</code> if updates are made to a copy of the Large
+	 *         Object, <code>false</code> otherwise
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public boolean locatorsUpdateCopy() throws SQLException;
+
+	/**
+	 * Determine if the database handles concatenations between
+	 * <code>NULL</code> and non-<code>NULL</code> values by producing a
+	 * <code>NULL</code> output.
+	 * 
+	 * @return <code>true</code> if <code>NULL</code> to non-<code>NULL</code>
+	 *         concatenations produce a <code>NULL</code> result,
+	 *         <code>false</code> otherwise.
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public boolean nullPlusNonNullIsNull() throws SQLException;
+
+	/**
+	 * Determine if <code>NULL</code> values are always sorted to the end of
+	 * sorted results regardless of requested sort order. This means that they
+	 * will appear at the end of sorted lists whatever other non-<code>NULL</code>
+	 * values may be present.
+	 * 
+	 * @return <code>true</code> if <code>NULL</code> values are sorted at
+	 *         the end, <code>false</code> otherwise
+	 * @throws SQLException
+	 *             a database error occurred
+	 */
+	public boolean nullsAreSortedAtEnd() throws SQLException;
+
+	/**
+	 * Determine if <code>NULL</code> values are always sorted at the start of
+	 * the sorted list, irrespective of the sort order. This means that they
+	 * appear at the start of sorted lists, whatever other values may be
+	 * present.
+	 * 
+	 * @return <code>true</code> if <code>NULL</code> values are sorted at

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