Each relationship in an E-R diagram has a ____ that shows the degree to which each entity participates in the relationship.
A) maximum cardinality
B) identifier
C) cardinality
D) primary key

Question

Quizplus · Accepted Answer

Cardinality is the attribute that shows the degree of participation of each entity in a relationship. It defines the number of occurrences of an entity in a relationship. It can be one-to-one, one-to-many, or many-to-many. Maximum cardinality refers to the maximum number of entity occurrences in a relationship. Identifier is a unique attribute that identifies an entity instance uniquely. Primary key is an attribute that uniquely identifies each instance of an entity in a table.

Each Relationship in an E-R Diagram Has a ____ That