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waht is the difference between primary key and super key?
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Answer Posted / manoj jain
Primary key is subset of candidate key
primary key=not null+unique
candidate key is minimal form of super key ie. candidate key
is subset of super key
common feature:-
primary key,super key,candidate key is used to identify a
entity in relation
| Is This Answer Correct ? | 30 Yes | 4 No |
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