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Primary Key vs Unique Key
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A primary key cannot allow null and can only be created once in a table. A unique key allows null and can be created multiple times in a table. The keys play an important part when it comes to... |










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i like
shubham shrivastav
Mon, 06/30/2014 - 15:02
Good clarify. ....
amardeep
Thu, 06/05/2014 - 15:23
The difference are good
riya
Thu, 06/05/2014 - 09:23
The basic differences are vry good nd vry easy...............
Lipika
Thu, 05/22/2014 - 08:12
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