Subject Re: [firebird-support] Was poor selectivity in foreign keys
Author German Pablo Gentile
Helen:

>I still dont understand wich is the idea in creating that foreign keys
>if i dont use internal RI (i use that in triggers, i mind).
>please can you show me how to write a trigger avoiding delete a record
>in ANAGRAPHICS if tehere anyc child record in teh others tables?
>
>TIA.
>
>German.
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