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From "Christopher James Blythe (JIRA)" <...@geronimo.apache.org>
Subject [jira] Created: (DAYTRADER-25) Update decimal precision and indexes in ddl
Date Tue, 14 Nov 2006 19:51:37 GMT
Update decimal precision and indexes in ddl
-------------------------------------------

                 Key: DAYTRADER-25
                 URL: http://issues.apache.org/jira/browse/DAYTRADER-25
             Project: DayTrader
          Issue Type: Improvement
            Reporter: Christopher James Blythe
            Priority: Minor


While working with previous versions of Trade, I found that the monetary values stored in
the database could overrun the decimal precision defined in the schema (10,2) if allowed to
run for an extended period of time. This would result in SQL exceptions related to data conversion.

To prevent this we increased the decimal presion to (14,2)

We also found that some of the indexs were not necessary and that others should be added.

In addition to the primary keys, here are the indexes we found to be the most useful...

CREATE INDEX a.profile_userid on accountejb(profile_userid);
CREATE INDEX h.account_accountid on holdingejb(account_accountid);
CREATE INDEX o.account_accountid on orderejb(account_accountid);
CREATE INDEX o.holding_holdingid on orderejb(holding_holdingid);
CREATE INDEX o.closed_orders on orderejb(account_accountid,orderstatus);

Will wait to submit a patch until the fate of Daytrader-14 is determined.

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