For any relation R,if,for every valid instance of A,that value of A uniquely determines the value of B:
A)then a primary dependency exists in the relation
B)then A is said to be functionally dependent on B
C)then B is said to be functionally dependent on A
D)then A and B are candidate keys for the relation

Question

Quizplus · Accepted Answer

If A uniquely determines the value of B, then we can say that B is functionally dependent on A. This means that if we know the value of A, we can determine the value of B.

For Any Relation R,if,for Every Valid Instance of A,that Value