Question

What is a primary key? How do we set a primary key? CBSE 2007, 06, 05, 04, 03, 02
or
Define primary key. How do you set it in MS-Access? CBSE 2006

Answer 1

Answer:

primary key is a field for a combination of field in the table which help to to identify each record uniquely in the table for example roll number field in the student table helps to identify each student with their unique roll number assigned to each one of them