| Subject | Re: [firebird-support] Was poor selectivity in foreign keys | 
|---|---|
| Author | German Pablo Gentile | 
| Post date | 2004-10-17T01:46:12Z | 
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.
>
>
>