ER MODEL AND BUSINESS RULES QUIZ

False

True

True

False

True

False

Circle

Diamond

Rectangle

Oval

Attribute

Entity

Optional One

Relationship

When a subtype entity inherits values of another subtype attribute

When a subtype entity inherits values of the supertype attribute

When a supertype entity inherits values of another supertype attribute

When a supertype entity inherits values of the subtype attribute

True

False

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.

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

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

Defining one or more subtypes of the supertype and forming supertype/subtype relationships.

Defining one or more supertypes of the subtype and forming supertype/subtype relationships.

Defining one or more supertypes of the subtype and not forming supertype/subtype relationships.

Defining one or more subtypes of the supertype and not forming supertype/subtype relationships.

Optional One

Attribute

Entity

Relationship