ER MODEL AND BUSINESS RULES QUIZ

True

False

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.

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

False

True

True

False

When a supertype entity inherits values of another supertype attribute

When a supertype entity inherits values of the subtype attribute

When a subtype entity inherits values of the supertype attribute

When a subtype entity inherits values of another subtype attribute

All of these

It may include restrictions.

It should be complex.

It should not be convertible to computer code.

False

True

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.

Entity

Optional One

Relationship

Attribute

False

True