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Unique Index no longer PC
Message
De
27/09/2001 10:00:20
Hilmar Zonneveld
Independent Consultant
Cochabamba, Bolivie
 
 
À
27/09/2001 09:49:52
Information générale
Forum:
Visual FoxPro
Catégorie:
Autre
Divers
Thread ID:
00561396
Message ID:
00561407
Vues:
34
>The Unique Index option no longer appears in the drop down list of index types when adding a new index to a table. However, if you add the index manually, it appears! VFP7 Help says "Visual FoxPro supports four types of indexes: primary, candidate, unique, and regular." I guess using a UI isn't PC these days.

The "unique" option is only included for backward compatibility. There should be no reason to use "unique" indices. What other database systems call "unique" is called "candidate" in Visual FoxPro. A primary key should be marked as "primary".

Probably, the designers of VFP decided to get rid of the outdated option from the UI, to avoid confusion.

Hilmar.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)
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