ER Model and Business Rules
A supertype/subtype hierarchy has which of the following features?

Subtypes at the lower lever in the hierarchy inherit attributes only from their immediate supertype.
Subtypes at the higher lever in the hierarchy inherit attributes only from their immediate subtype.
Attributes are assigned at the lowest logical level.
Attributes are assigned at the highest logical level.

ANSWER DOWNLOAD EXAMIANS APP

ER Model and Business Rules
Use of a supertype/subtype relationship is necessary when which of the following exists?

Attributes apply to all of the instances of an entity type.
An instance of a subtype participates in a relationship that is unique to that subtype.
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.

ANSWER DOWNLOAD EXAMIANS APP

ER Model and Business Rules
Specialization is which of the following processes?

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 subtypes of the supertype and not forming supertype/subtype relationships.
Defining one or more supertypes of the subtype and not forming supertype/subtype relationships.

ANSWER DOWNLOAD EXAMIANS APP