Computer Science, asked by manmen80, 1 year ago

what is primary key?​

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Answered by Anonymous
2

Answer:

in the relational model of database a primary key is a specific choice of a minimal set of attributes that uniquely specify a tuple in a relation. in formerly a primary key is" which attributes identify a record" and in simple cases are simply a single attribute :unique ID

Answered by agrim59
1

Answer:

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