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Re: help: foreign key from 2 tables [message #371715] Wed, 29 November 2000 07:05
John R
Messages: 156
Registered: March 2000
Senior Member
I don't think that can be done as a constraint.

I think what you need to do is create a Before-Insert trigger on that table and in there check to see that the value exists on one of the other two tables.

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