ER MODEL AND BUSINESS RULES QUIZ

When a subtype entity inherits values of the supertype attribute

When a supertype entity inherits values of the subtype attribute

When a subtype entity inherits values of another subtype attribute

When a supertype entity inherits values of another supertype attribute

An attribute of the subtype whose values determine the subtype

An attribute of the supertype whose values determine the subtype

An attribute of the subtype whose values determine the supertype

An attribute of the supertype whose values determine the supertype

Optional One

Attribute

Entity

Relationship

True

False

Circle

Oval

Rectangle

Diamond

True

False

Each subtype has only one attribute.

Each supertype has only one subtype.

Each subtype has only one supertype.

Each supertype has only one attribute.

Subtypes at the higher lever in the hierarchy inherit attributes only from their immediate subtype.

Subtypes at the lower lever in the hierarchy inherit attributes only from their immediate supertype.

Attributes are assigned at the lowest logical level.

Attributes are assigned at the highest logical level.

True

False

False

True