ER MODEL AND BUSINESS RULES QUIZ

Specific to the organization

A singular noun

Concise

All of these

True

False

An instance of a subtype participates in a relationship that is unique to that subtype.

No attributes apply to any of the instances of an entity type.

An instance of a subtype participates in a relationship that is the same as the other subtypes.

Attributes apply to all of the instances of an entity type.

False

True

True

False

True

False

Relationship

Entity

Optional One

Attribute

Overlap with partial specialization

Disjoint with partial specialization

Disjoint with total specialization

Overlap with total specialization

An attribute of the subtype whose values determine the supertype

An attribute of the supertype whose values determine the subtype

An attribute of the subtype whose values determine the subtype

An attribute of the supertype whose values determine the supertype

False

True