If entity B is a mandatory participant, then:
A) the minimum cardinality of the relationship is two.
B) the minimum cardinality of the relationship cannot be defined.
C) the minimum cardinality of the relationship is one.
D) the minimum cardinality of the relationship is optional.
E) the join level is not null.

Question

Quizplus · Accepted Answer

If entity B is a mandatory participant in the relationship, it means that every instance of entity A must be associated with at least one instance of entity B. Therefore, the minimum cardinality of the relationship is one.

If Entity B Is a Mandatory Participant, Then