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Composite primary key.

Kami_LilyJul 16 2010 — edited Jul 19 2010
Hi !
Please tell me that any advantage / disadvantages of composite primary key.

let suppose student table may i use rollno and classno as composite primary key or may take idno alone as a primary key.

Regards.
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Locked on Aug 16 2010
Added on Jul 16 2010
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