From the choices below,identify the attribute below that would make the best primary key.
A)On campus mailbox number.
B)GPA.
C)Credit hours.
D)Student ID number.

Question

Quizplus · Accepted Answer

The Student ID number is a unique identifier for each student and can be used as the primary key. On campus mailbox number may not be unique for each student and can change over time. GPA and credit hours can also change over time and may not be unique for each student.

From the Choices Below,identify the Attribute Below That Would Make