Question

Why do we need a primary Key? please quickly it is my exam question​

Answer 1

the specific key that is used in a single table is known as primary key

Answer 2

Explanation:

Each database table needs a primary key because it ensures row-level accessibility. If you choose an appropriate primary key, you can specify a primary key value, which lets you query each table row individually and modify each row without altering other rows in the same table.