Gce Model Questions Vol1 2022 Computer Studies Question 34

Practice objective / multiple choice question 34 from the 2022 Gce Model Questions Vol1 Computer Studies examination.

Gce Model Questions Vol1 2022 Computer Studies Objective / Multiple Choice Hard Difficulty
Question 34 GCE_MODEL_QUESTIONS_VOL1 • 2022 • COMPUTER_STUDIES • objective

Consider a relation R(A,B,C,D) with the following functional dependencies: - A → B - B → C - A → D - D → B (a) Determine the highest normal form that R satisfies. (b) Decompose R into a set of relations that are in Boyce‑Codd Normal Form (BCNF). State how many relations result from the decomposition and list the attributes of each relation.

Answer Options

A. Highest normal form: 1NF. BCNF decomposition yields 2 relations: R1(A,B,D) and R2(C).
Correct Answer B. Highest normal form: 2NF. BCNF decomposition yields 2 relations: R1(D,B) and R2(A,C,D).
C. Highest normal form: 3NF. BCNF decomposition yields 2 relations: R1(D,B) and R2(A,C,D).
D. Highest normal form: 2NF. BCNF decomposition yields 3 relations: R1(A,B), R2(B,C), and R3(A,D).
Correct Answer
B
Correct Option:
Highest normal form: 2NF. BCNF decomposition yields 2 relations: R1(D,B) and R2(A,C,D).

About This Question

This is Gce Model Questions Vol1 2022 Computer Studies Question 34. It is one of the objective questions from the 2022 Gce Model Questions Vol1 Computer Studies examination.

Difficulty level: Hard .

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