A ___________ is used when an extra digit is added to a coded field to make sure it the entered data is correct (like social security numbers).
A)Completeness check
B)Format check
C)Range check
D)Check digit check
E)Consistency check

Question

Quizplus · Accepted Answer

A check digit is a digit added to a number (either at the end or within it) that validates the authenticity of the number. It is commonly used in social security numbers, credit card numbers, and UPC codes.

A ___________ Is Used When an Extra Digit Is Added