Explanation: Multivalued dependencies, do not rule out the existence of certain tuples. Instead, they require that other tuples of a certain form be present in the relation. 5. Which forms has a relation that possesses data about an individual entity?
A. 2NF
B. 3NF
C. 4NF
D. 5NF
Answer:A
Explanation: Multivalued dependencies, do not rule out the existence of certain tuples. Instead, they require that other tuples of a certain form be present in the relation. 5. Which forms has a relation that possesses data about an individual entity?
A. 2NF B. 3NF C. 4NF D. 5NF
Explanation: A Table is in 4NF if and only if, for every one of its non-trivial multivalued dependencies X \twoheadrightarrow Y, X is a superkey—that is, X is either a candidate key or a superset thereof. 6. If a multivalued dependency holds and is not implied by the corresponding functional dependency, it usually arises from one of the following sources.