Plateforme Level Extreme
Abonnement
Profil corporatif
Produits & Services
Support
Légal
English
Do & Don'ts - NEW
Message
De
31/12/1999 08:24:45
 
 
À
Tous
Information générale
Forum:
Visual FoxPro
Catégorie:
Autre
Titre:
Do & Don'ts - NEW
Divers
Thread ID:
00310868
Message ID:
00310868
Vues:
59
Rule 8: All tables have primary keys.



I agree when one is doing new development or can add the keys to an old system during conversion.

HOWEVER, when you have a Clipper system that has been in use for 17 years and converting the entire system will take 2-3 years, some proper design techniques have to wait. The problem is that some of the Clipper code has to run in parallel with the VFP code and without changing code in 2 systems, primary can only be used sparingly.

I'm posting this as an exception. After 15 years of working on lots of systems written by someone else, I've learned that "Never is a very long time!!!"
Mike
Suivant
Répondre
Fil
Voir

Click here to load this message in the networking platform