Hi!
I have a question about unique keys:
When I issue the statement
CREATE UNIQUE INDEX UK_TBDOCUMENT ON TBDOCUMENT(DOCUMENTID)
Oracle creates a unique index (as in user_indexes) but no unique constraint
(as in user_constraints)
When I issue that statement in a create table statement
create table....
CONSTRAINT UK_TBDOCUMENT
UNIQUE (DOCUMENTID)
Oracle creates a unique constraint plus an index.
Why is Oracle doing this? Could somebody please shed some light on this?
This is 8.1.6 on Win2k.
Thanks,
Helmut
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Author: Helmut Daiminger
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