The primary key for a Purchase-Inventory table that consists of the Purchase Order Number and the Inventory Item Number,is known as a
A)concatenated key.
B)foreign key
C)primary key.
D)dual key.

Question

Quizplus · Accepted Answer

A concatenated key, also known as a composite key, is a key that consists of two or more attributes that uniquely identify an entity occurrence. In this case, both the Purchase Order Number and the Inventory Item Number together form the primary key for the Purchase-Inventory table.

The Primary Key for a Purchase-Inventory Table That Consists of the Purchase