Computer Science, asked by Anonymous, 1 year ago

what is a primary key in a short answers

Answers

Answered by helloo1

ur qs is not clear..

Anonymous: if you don't know the answer please don't give nonsense

Anonymous: nonsense

Answered by Anonymous

A primary key is a special relational database table column or combination of columns designated to uniquely identify all table records.A primary key's main features are:It must contain a unique value for each row of data .It cannot contain null values.

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