A ________ is a column (or set of columns)which have a unique value that cannot be duplicated in other rows?
A)primary key.
B)query.
C)SQL statement.
D)lookup value.

Question

Quizplus · Accepted Answer

This describes the definition of a primary key in a database table. A primary key is a unique identifier for each row in the table and cannot be duplicated in any other row in the same table.

A ________ Is a Column (Or Set of Columns)which Have