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I have come across a situation where I think I need both a check constraint and a referential constraint on the same column to handle different situations.

When a row is inserted the default value for the status column will be 'N'. When the information has been validated it will change to 'V'. This is my current check constraint.

If the validation is overridden an override code can be placed into the status column from an exception table. This is my referential constraint.

I have thought about adding the check values to the exception table and excluding them from the exception prompt but I would prefer to handle it without doing that if possible. If I can't have both constraints on the status column this is probably what I will do.


Rick Chevalier
IT Software Solutions - Loan Servicing



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