ER MODEL AND BUSINESS RULES QUIZ

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

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

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

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

Each supertype has only one attribute.

Each subtype has only one supertype.

Each subtype has only one attribute.

Each supertype has only one subtype.

Attribute

Optional One

Entity

Relationship

False

True

True

False

When a subtype entity inherits values of the supertype attribute

When a subtype entity inherits values of another subtype attribute

When a supertype entity inherits values of another supertype attribute

When a supertype entity inherits values of the subtype attribute

True

False

False

True

False

True

True

False