Database-Management-System

Question 633

Specialization is a __________ process.

A	Top – down
B	Bottom – up
C	Both (A) and (B)
D	None of the above

Database-Management-SystemER-ModelUGC NET CS 2004 Dec-Paper-2

Question 633 Explanation:

→ Generalization – the process of defining a general entity type from a collection of specialized entity types.
→ Specialization – the opposite of generalization, since it defines subtypes of the supertype and
determines the relationship between the two.
→ Specialization is a top down approach. The following example “Employee” could be a
developer or a tester.relationship between the two.
→ Specialization is a top down approach. The following example “Employee” could be a developer or a tester.

Correct Answer: A

Question 633 Explanation:

→ Generalization – the process of defining a general entity type from a collection of specialized entity types.
→ Specialization – the opposite of generalization, since it defines subtypes of the supertype and
determines the relationship between the two.
→ Specialization is a top down approach. The following example “Employee” could be a
developer or a tester.relationship between the two.
→ Specialization is a top down approach. The following example “Employee” could be a developer or a tester.