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DBC Triggers and RI
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Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Versions des environnements
Visual FoxPro:
VFP 9 SP2
Divers
Thread ID:
01561335
Message ID:
01561476
Vues:
68
>>>>In the brief period when I used DBC/DBF I never used the RI or triggers. Didn't trust them. (Steve Sawyer once gave a great presentation on why that distrust was well-founded)
>>>>
>>>>Now use them even less :-) but a couple quesitons
>>>>
>>>>Are there any circumstances when they do no fire.
>>>>
>>>>For example ; Sql insert / delete from a table. Should it fire the RI code to delete children?
>>>>
>>>>Browse, mark record as deleted. RI fire?
>>>>
>>>>Manual insert / update ?
>>>>
>>>>TIA
>>>
>>>I believe in all these cases the RI triggers should fire. Did you find a case when it's not so?
>>
>>I'll have to retest, but I think if one browses a parent, marks a row for delete, the casade delete does not happen in children but I will have to test again.
>
>Try re-testing after moving a record pointer.

Maybe that will clear up the problem but it shouldn't be necessary to do that. The cascade to the child table should occur immediately following a DELETE in the parent table.
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