ER MODEL AND BUSINESS RULES QUIZ

True

False

True

False

True

False

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 subtypes of the supertype and forming supertype/subtype relationships.

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

True

False

Overlap with total specialization

Disjoint with total specialization

Disjoint with partial specialization

Overlap with partial specialization

Disjoint with partial specialization

Overlap with total specialization

Disjoint with total specialization

Overlap with partial specialization

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.

It should not be convertible to computer code.

It may include restrictions.

All of these

It should be complex.

False

True