City Guilds Model Questions Vol1 2023 Information Technology Question 4

Practice objective / multiple choice question 4 from the 2023 City Guilds Model Questions Vol1 Information Technology examination.

City Guilds Model Questions Vol1 2023 Information Technology Objective / Multiple Choice Hard Difficulty
Question 4 CITY_GUILDS_MODEL_QUESTIONS_VOL1 • 2023 • INFORMATION_TECHNOLOGY • objective

Consider a relation \(R(A,B,C,D)\) with the functional dependencies \(A \rightarrow B\), \(BC \rightarrow D\) and \(D \rightarrow A\).\n\n(a) List all candidate keys of \(R\).\n\n(b) State the highest normal form (up to BCNF) that \(R\) satisfies, justifying your answer.

Answer Options

A. Candidate keys: AC, BC. Highest normal form: 3NF (not BCNF).
B. Candidate keys: AC, BC, CD. Highest normal form: BCNF.
C. Candidate keys: AB, AD, CD. Highest normal form: 2NF.
Correct Answer D. Candidate keys: AC, BC, CD. Highest normal form: 3NF (not BCNF).
Correct Answer
D
Correct Option:
Candidate keys: AC, BC, CD. Highest normal form: 3NF (not BCNF).

About This Question

This is City Guilds Model Questions Vol1 2023 Information Technology Question 4. It is one of the objective questions from the 2023 City Guilds Model Questions Vol1 Information Technology examination.

Difficulty level: Hard .

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