Question

What is primary key in DBMS​

Answer 1

Answer:

A primary key is a field in a table which uniquely identifies each row/record in a database table. Primary keys must contain unique values. A primary key column cannot have NULL values. A table can have only one primary key, which may consist of single or multiple fields.

Answer 2

Here u go ♥️♥️

CBSE 2020 - 20 th Feb .....

Primary key is a key is a sort of check which checks the uniqueness of the data, field..

Hope it helps u.............