If there are two entities with a relationship between them, and one of the entities is completely dependent on the other, then which of the following must exist?
A.Derived attribute
B.Optional one cardinality
C.Multi-valued attribute
D.Weak entity
Answer:D
If there are two entities with a relationship between them, and one of the entities is completely dependent on the other, then which of the following must exist?
A.Derived attribute B.Optional one cardinality C.Multi-valued attribute D.Weak entity