Which of the following is an example of a field which should not have duplicate data?
A)City
B)State
C)Lastname
D)Primary key

Question

Quizplus · Accepted Answer

A primary key is a field or combination of fields that uniquely identifies a record in a table. It should not have duplicate data, as that would defeat the purpose of having a primary key. The other options may have duplicate data (e.g. multiple people may have the same last name).

Which of the Following Is an Example of a Field