Explanation:For eg.,Suppose an instructor entity set had attributes dept name and dept address, and there is a functional dependency dept name -> dept address. 2. If a multivalued dependency holds and is not implied by the corresponding functional dependency, it usually arises from one of the following sources.
A. A many-to-many relationship set
B. A multivalued attribute of an entity set
C. A one-to-many relationship set
D. Both a and b
Answer:A
Explanation:For eg.,Suppose an instructor entity set had attributes dept name and dept address, and there is a functional dependency dept name -> dept address. 2. If a multivalued dependency holds and is not implied by the corresponding functional dependency, it usually arises from one of the following sources.
A. A many-to-many relationship set B. A multivalued attribute of an entity set C. A one-to-many relationship set D. Both a and b