Maximum cardinality in an E-R diagram refers to the maximum number of ________.
A) relationships possible in a diagram
B) entities that can be involved in a relationship
C) identifiers possible in a particular diagram
D) attributes an entity can have

Question

Quizplus · Accepted Answer

The maximum cardinality in an E-R diagram refers to the maximum number of entities that can be involved in a relationship. It defines the upper bound of the number of entities that can participate in a relationship. For example, a relationship between a customer and an order may have a maximum cardinality of "many" on the order side, indicating that a customer can place multiple orders, but an order can only belong to one customer.

Maximum Cardinality in an E-R Diagram Refers to the Maximum