A one-to-one binary relationship _____.
A) involves a single entity type
B) involves two entity types
C) allows an occurrence of one entity type to be associated with several occurrences of another entity type
D) allows an occurrence of one entity type to be associated with several occurrences of another entity type and vice versa
E) restricts the number of attributes that an entity has

Question

Quizplus · Accepted Answer

A one-to-one binary relationship involves two different entity types where each entity from one entity type is associated with at most one entity from the other entity type, and vice versa.

A One-To-One Binary Relationship _____