Question

What is a primary key ? How can we set it?​

Answer 1

Add or change a table's primary key in Access. A primary key is a field or set of fields with values that are unique throughout a table. Values of the key can be used to refer to entire records, because each record has a different value for the key. Each table can only have one primary key.

Answer 2

Answer:

A primary key is a field or set of fields with values that are unique throughout a table. values of the key can be used to refer to entire records, because each records has a different value for the key. each table can only have one primary key..