A circle across the relationship line near an entity indicates ________.
A)a maximum cardinality of "zero"
B)a maximum cardinality of "one"
C)a minimum cardinality of "optional"
D)a minimum cardinality of "required"
E)None of the above.

Question

Quizplus · Accepted Answer

A circle across the relationship line near an entity represents a minimum cardinality of "optional" which means that one entity may or may not be associated with another entity. The maximum cardinality is usually represented by an arrow indicating the number of entities that can be associated with each other.

A Circle Across the Relationship Line near an Entity Indicates