ER MODEL AND BUSINESS RULES QUIZ

False

True

False

True

Disjoint with partial specialization

Overlap with total specialization

Overlap with partial specialization

Disjoint with total specialization

Attribute

Relationship

Optional One

Entity

False

True

Relationship

Entity

Attribute

Optional One

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

Attributes are assigned at the highest logical level.

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

Attributes are assigned at the lowest logical level.

It should be complex.

All of these

It should not be convertible to computer code.

It may include restrictions.

Attributes apply to all of the instances of an entity type.

No attributes apply to any of the instances of an entity type.

An instance of a subtype participates in a relationship that is the same as the other subtypes.

An instance of a subtype participates in a relationship that is unique to that subtype.

True

False