Plateforme Level Extreme
Abonnement
Profil corporatif
Produits & Services
Support
Légal
English
Referential integrity which tier?
Message
 
À
23/11/1999 18:02:27
Information générale
Forum:
Visual FoxPro
Catégorie:
Autre
Divers
Thread ID:
00288250
Message ID:
00294693
Vues:
49
>That shouldn't be RI, RI would say, cascade, restrict, or ignore the delete, not "move it to the manageer record".

Just a comment...

RI does not say this. Instead it says "a database is said to have referential integrity if it has no un-matched foreign key values"

Cascade, restrict or ignore are a VFP implementation of triggers that help enforce referential integrity. This set of options can be expanded to include "Change". "Change" would be to point the child records to a different record in the parent table.
Précédent
Suivant
Répondre
Fil
Voir

Click here to load this message in the networking platform