Question

what is primary key in brief​

Answer 1

HEY ANKITA!!

HERE IS YOUR ANSWER...

PRIMARY KEY is a field that uniquely identifies records in a table.

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Answer 2

SALUT MATE.....

HERE IS UR ANSWER....

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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