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Define candidate key, alternate key, composite key?
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Answer Posted / koteswararao bora
candidate key:the minimum set of attributes which uniquely
identifies the touples in a table .
primary key:any candidate key choosen by the developer is
called primary key.
composite key: a candidate key which have more than one
attribute is called composite key.
alternate key: a candidate key other than primary key
is called alternate key.
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