Which of the following is true about a key?
A) It may be unique.
B) It may be non-unique.
C) It can only identify one row.
D) Both A and B
E) None of the above

Question

Quizplus · Accepted Answer

A key may either be unique or non-unique, depending on the specific use case. Additionally, a key can only identify a single row within a table, but this does not negate the fact that a key can be either unique or non-unique.

Which of the Following Is True About a Key