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Topic: Define candidate key, alternate key, and composite key
Sachin Jain
30 Oct 2010 at 02:35 AM
Define candidate key, alternate key, and composite key.

Re: Define candidate key, alternate key, and composite key
Gaurav
31 Oct 2010 at 10:54 PM
A candidate key is one that can identify each row of a table uniquely. Generally a candidate key becomes the primary key of the table. If the table has more than one candidate key, one of them will become the primary key, and the rest are called alternate keys. A key formed by combining at least two or more columns is called composite key.
Total Replies: 1
 
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