Return-Path: Delivered-To: apmail-cassandra-commits-archive@www.apache.org Received: (qmail 86210 invoked from network); 16 Apr 2010 10:33:20 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 16 Apr 2010 10:33:20 -0000 Received: (qmail 42777 invoked by uid 500); 16 Apr 2010 10:33:20 -0000 Delivered-To: apmail-cassandra-commits-archive@cassandra.apache.org Received: (qmail 42737 invoked by uid 500); 16 Apr 2010 10:33:20 -0000 Mailing-List: contact commits-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@cassandra.apache.org Delivered-To: mailing list commits@cassandra.apache.org Received: (qmail 42729 invoked by uid 500); 16 Apr 2010 10:33:19 -0000 Delivered-To: apmail-incubator-cassandra-commits@incubator.apache.org Received: (qmail 42726 invoked by uid 99); 16 Apr 2010 10:33:19 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 16 Apr 2010 10:33:19 +0000 X-ASF-Spam-Status: No, hits=-1358.2 required=10.0 tests=ALL_TRUSTED,AWL X-Spam-Check-By: apache.org Received: from [140.211.11.130] (HELO eos.apache.org) (140.211.11.130) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 16 Apr 2010 10:33:18 +0000 Received: from eos.apache.org (localhost [127.0.0.1]) by eos.apache.org (Postfix) with ESMTP id 9396317D15; Fri, 16 Apr 2010 10:32:58 +0000 (GMT) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable From: Apache Wiki To: Apache Wiki Date: Fri, 16 Apr 2010 10:32:58 -0000 Message-ID: <20100416103258.22444.35903@eos.apache.org> Subject: =?utf-8?q?=5BCassandra_Wiki=5D_Update_of_=22DataModelv2=22_by_ronaldmathi?= =?utf-8?q?es?= Dear Wiki user, You have subscribed to a wiki page or wiki category on "Cassandra Wiki" for= change notification. The "DataModelv2" page has been changed by ronaldmathies. http://wiki.apache.org/cassandra/DataModelv2?action=3Ddiff&rev1=3D18&rev2= =3D19 -------------------------------------------------- it adds an extra layer in your data structure, instead of having only a r= ow which consists of a key and a list of columns we can now have a row which consists of a key and a list of super columns which by itself has k= eys and per key a list of columns. = - =3D=3D !ColumnFamily containing !SuperColumns =3D=3D + =3D=3D ColumnFamily containing SuperColumns =3D=3D = A !ColumnFamily which contains !SuperColumns isn't that much different fr= om a !ColumnFamily containing Columns, instead of having a row consisting o= f Columns we have rows consisting of !SuperColumns. =20