ER MODEL AND BUSINESS RULES QUIZ

Overlap with total specialization

Disjoint with total specialization

Disjoint with partial specialization

Overlap with partial specialization

False

True

When a supertype entity inherits values of the subtype attribute

When a subtype entity inherits values of the supertype attribute

When a supertype entity inherits values of another supertype attribute

When a subtype entity inherits values of another subtype attribute

All of these

It should be complex.

It may include restrictions.

It should not be convertible to computer code.

Corresponding object

Action

Anchor object

All of these

True

False

Entity

Relationship

Optional One

Attribute

True

False

True

False

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 not forming supertype/subtype relationships.

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