Question

explain the use of primary key in a table???


follow for more points!!!!​

Answer 1

Answer:

A primary key is the column or columns that contain values that uniquely identify each row in a table. A database table must have a primary key for Optim to insert, update, restore, or delete data from a database table. Optim uses primary keys that are defined to the database

Explanation:

ty for points :)

Answer 2

Explanation:

Primary key-->Primary key is the uniquely identified value in a row of table.

Example:- Roll no.,Phone no. etc.

hope it will help you Dear.