Computer Science, asked by minakshidevi5548, 6 months ago

what is a primary key

Answers

Answered by ankurshirsath

Answer:

primary key is a key which uniquely identifies each record in a table.

Answered by yadavpk1984

Answer:

a primary key is a specific choice of a minimal set of attributes that uniquely specify a tuple in a relation. Informally, a primary key is "which attributes identify a record", and in simple cases are simply a single attribute: a unique id. Wikipedia

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