Consider a relation R(A,B,C). A functional dependency AB →C holds on R. Then it is also true that:
a. A→C holds on R.
b. B→C holds on R.
c. AB is a key.
d. Both A & B are true.
Consider a relation R(A,B,C). A functional dependency AB →C holds on R. Then it is also true that: a. A→C …
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Answer: c. AB is a key.