If you've heard it a lot (as I'm sure you are right.. then you must have
missed the many very full explanations as to why... You'd be better off
doing a search on "primary key" on the yahoo list and you'll get plenty of
info back
Alan

-----Original Message-----
From: Joe Martinez [mailto:joe@...]
Sent: Friday, 21 February 2003 7:30 PM
To: ib-support@yahoogroups.com
Subject: Re: [ib-support] Changing field all places

>a) never use a PK which has "business meaning"; use a generated PK;
>b) never ever let your end users touch the PK of any table.

I've heard this a lot here, but I don't think I've ever heard an
explanation of why. If you can guarantee uniqueness of the PK, and use ON
UPDATE CASCADE, then why not let it have "business meaning"?

-Joe



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