When i should use primary key or index?

Posted by Sein Kraft on Stack Overflow See other posts from Stack Overflow or by Sein Kraft
Published on 2010-05-20T22:21:25Z Indexed on 2010/05/21 9:10 UTC
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primary-key

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index

When i should use primary key or index?

Which are the differences between primary key and index and which is the best?

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