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The following page has been changed by KevinWilliams: http://wiki.apache.org/ws/WorkingWithCompoundKeys ------------------------------------------------------------------------------ + ## page was renamed from CompoundKeys The RDB DAS provides the ability to work with single-column keys as well as [http://en.wikipedia.org/wiki/Compound_key compound keys]. Keys must be identified to the DAS for two purposes: flushing changes to the database and defining a relationship. In either case, the keys can be single-colomn or compound. We'll start with the first purpose: flushing changes to the database (also called "apply changes processing"). As part of change summary processing, the DAS will generate a set of INSERT, UPDATE and DELETE statements for execution against the database and these statements require a primary key. So, although the primary key definition is not required for reading data, it is required for writeing data via apply changes processing. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
