Identify the attribute below that would not make a good primary key.
A)Postal code.
B)Social security number.
C)A unique number automatically generated by the system.
D)Cell phone number.

Question

Quizplus · Accepted Answer

Postal codes are not unique to individuals or records, meaning multiple people or locations can share the same postal code. This lack of uniqueness makes it unsuitable as a primary key, which requires each value to be unique to identify each record distinctly.

Identify the Attribute Below That Would Not Make a Good