Question

Primary Key constraint is combination of which two constraints

Answer 1

Explanation:

A PRIMARY KEY constraint designates a column or combination of columns as the table's primary key. To satisfy a PRIMARY KEY constraint, both of the following conditions must be true: No primary key value can appear in more than one row in the table. No column that is part of the primary key can contain a null.

Answer 2

$<marque>$

●A PRIMARY KEY constraint designates a column or combination of columns as the table's primary key. To satisfy a PRIMARY KEY constraint, both of the following conditions must be true: No primary key value can appear in more than one row in the table. No column that is part of the primary key can contain a null●