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Using NonUnique Index to Enforce Uniqueness

 
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Since: Feb 23, 2005
Posts: 1



(Msg. 1) Posted: Wed Feb 23, 2005 4:40 am
Post subject: Using NonUnique Index to Enforce Uniqueness
Archived from groups: comp>databases>oracle>misc (more info?)

Oracle manual describes using non unique index to enforce unique constraint
so that the index will not be dropped with constraint is diabled.

But I dont understand why non unique index can enforce uniqueness?

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