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unique index vs primary key constraint

edited Sep 2, 2009 6:39AM in Database Administration (MOSC) 2 commentsAnswered
 Hi

Is there any difference between a primary key constraint and a unique index other then the syntatical change?

Is --> "create unique index ......" same as "alter table add constraint primary key...."

what is oracle's recommendation on as to what is the best method out of the 2?

thanks

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