On Mon, 22 Oct 2001, Josh Berkus wrote:
> Each significant data table contains one column, the first column,
> called "usq", for "universal sequence". This usq field may or may not
> be the primary key for the table, but does have a unique index. The usq
> is populated by a single sequence "universal_sq" which is shared between
> tables, thus allowing all tables usq uniqueness between them.
>
> This strategy has allowed me to write a number of functions which are
> table-agnostic, needing only the usq to do their job (such as a function
> that creates modification hisotry).
Josh --
Good example! I'll bet a lot of PG users may have never realized that you
can use the same sequence across several tables.
--
Joel BURTON | joel@joelburton.com | joelburton.com | aim: wjoelburton
Independent Knowledge Management Consultant
