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 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 supertypes of the subtype and forming supertype/subtype relationships.

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP