The subset of a super key is a candidate key under what condition?
A. No proper subset is a super key
B. All subsets are super keys
C. Subset is a super key
D. Each subset is a super key
Answer:A
The subset of a super key is a candidate key under what condition?
A. No proper subset is a super key B. All subsets are super keys C. Subset is a super key D. Each subset is a super key