Gce Model Questions Vol1 2018 Computer Studies Question 14

Practice objective / multiple choice question 14 from the 2018 Gce Model Questions Vol1 Computer Studies examination.

Gce Model Questions Vol1 2018 Computer Studies Objective / Multiple Choice Hard Difficulty
Question 14 GCE_MODEL_QUESTIONS_VOL1 • 2018 • COMPUTER_STUDIES • objective

Consider a relation \(R(A,\,B,\,C,\,D)\) with the functional dependencies: \(A \rightarrow B\), \(B \rightarrow C\), \(AD \rightarrow C\).\ (i) List all candidate keys of \(R\).\ (ii) State the highest normal form that \(R\) satisfies.\ (iii) Decompose \(R\) into a set of relations that are in Boyce‑Codd Normal Form (BCNF).

Answer Options

Correct Answer A. Candidate key: AD; Highest normal form: 1NF; BCNF decomposition: R1(A,B), R2(B,C), R3(A,D)
B. Candidate key: AD; Highest normal form: 1NF; BCNF decomposition: R1(A,B,C), R2(A,D)
C. Candidate key: A; Highest normal form: 1NF; BCNF decomposition: R1(A,B), R2(B,C), R3(A,D)
D. Candidate key: AD; Highest normal form: 2NF; BCNF decomposition: R1(A,B), R2(B,C), R3(A,D)
Correct Answer
A
Correct Option:
Candidate key: AD; Highest normal form: 1NF; BCNF decomposition: R1(A,B), R2(B,C), R3(A,D)

About This Question

This is Gce Model Questions Vol1 2018 Computer Studies Question 14. It is one of the objective questions from the 2018 Gce Model Questions Vol1 Computer Studies examination.

Difficulty level: Hard .

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