A list consists of last names, first names, address and pin codes if all people in the list have the same last and the same pin code, a useful key would be
A)The pin code
B)The last name
C)A compound key consisting of the first name and the last name
D)All of the above

Question

Quizplus · Accepted Answer

Since all people have the same last name and pin code, the only unique identifier left is the first name. However, to ensure uniqueness and clarity, combining the first name with the last name (even though it's the same for everyone) as a compound key is the most effective approach.

A List Consists of Last Names, First Names, Address and Pin