A One-To-One Binary Relationship _____

Multiple Choice

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