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 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 forming supertype/subtype relationships.

False

True

True

False

False

True

False

True

All of these

It may include restrictions.

It should be complex.

It should not be convertible to computer code.

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

Overlap with partial specialization

Overlap with total specialization

Disjoint with total specialization

Disjoint with partial specialization

True

False

Attribute

Entity

Optional One

Relationship