Question

Which of the following statements is true?

A. The maximum cardinality is used to indicate whether the relationship between two entities is optional or mandatory.
B. The minimum cardinality is used to indicate whether an entity can be linked to only one or more than one instance of another entity.
C. The maximum cardinality can be either zero or one.
D. None of these are correct
E. The minimum cardinality can be either one or many.

Answer 1

D. None of these are correct

Step-by-step explanation:

Cardinality refers to the entity instances for which it is eligible to participate in a relationship instance. There are two types of cardinality, maximum and minimum.

Where maximum cardinality is further of 3 types, one to one (1:1), one to many (1:N), and many to many (N:M).

Minimum cardinality refers to the minimum number of instances an entity shall participate, it is usually either 0 or 1..

The participation where is 0 then the it is considered optional, if it is 1 then it is mandatory, it is part of minimum cardinality.

Thus, all the stated statements are false.