Which of the following best describes the purpose of a primary key?
A)Allows linking two or more tables.
B)Indicates the minimum multiplicities for an association.
C)Matches values of foreign keys in other classes.
D)Uniquely identifies each instance of the class.

Question

Quizplus · Accepted Answer

The purpose of a primary key is to uniquely identify each instance of the class. It is a unique identifier that ensures that no two instances have the same key value. It is used to access, retrieve, and modify information about the instance in the database. A primary key is an important component of a database as it helps to ensure data integrity and accuracy.

Which of the Following Best Describes the Purpose of a Primary