On Fri, Jul 23, 2004 at 10:07:48AM -0400, Tom Lane wrote:
> The other standard reason for using a made-up value as primary key is
> that it's under your control and you can guarantee it isn't going to
> change: one record will have the same primary key for its entire life,
> which vastly simplifies handling of foreign keys and so forth.
That is pretty much the main reason why our schema does so.
Karsten
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