Posted by Erland Sommarskog on 02/18/06 00:36

ibiza (lambertb@gmail.com) writes:
> Yes, you are both right, I will remove it then.
>
> I thought it was always a good idea to have an identity primary key on
> any table.

If you ask some people, they will tell you that it is never a good idea!

Personally, I say it is a good idea when there is no useful natural key,
which often is the case for base entities: customers, financial
instruments, addresses etc. However for connection table, or tables
describing composed entities, articifical keys are usually not needed.



--
Erland Sommarskog, SQL Server MVP, esquel@sommarskog.se

Books Online for SQL Server 2005 at
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Books Online for SQL Server 2000 at
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