Question

The fields which is designed as the primary key of a table cannot have _____________.​

Answer 1

Answer:

entry of same data in two record is not possible in the primary key field.

Answer 2

Explanation:

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.

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