Posted by RRR on 11/23/07 16:33

On Nov 22, 4:41 pm, Erland Sommarskog <esq...@sommarskog.se> wrote:
> I don't know about your data model, but I would hold it as likely that
> either you have an incorrect design, or you have a misconception of what
> you want to do. I have ran into the situation that I wanted a partial
> FK myself, but it's a very rare scenario.

A foreign key should reference the (primary) "key, the whole key and
nothing but the whole key, so help me Codd!"

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