4. Decomposition- BCNF. Consider relation R=(ABCDEFG), F={AB>CD, CDE→AB, AG>BD, BDG>EF} (a) Is it in BCNF? Provide a good justification – must use textbook definition and reasons given must be specific. (b) Apply the BCNF decomposition algorithm to decompose R into a set of BCNF tables. If this cannot be done, explain why.

4. Decomposition- BCNF. Consider relation R=(ABCDEFG), F={AB>CD, CDE→AB, AG>BD, BDG>EF} (a) Is it in BCNF? Provide a good justification – must use textbook definition and reasons given must be specific. (b) Apply the BCNF decomposition algorithm to decompose R into a set of BCNF tables. If this cannot be done, explain why.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

4. Decomposition– BCNF. Consider relation R=(ABCDEFG), F={AB>CD, CDE>AB,
AG→BD, BDG→EF}
(a) Is it in BCNF? Provide a good justification – must use textbook definition and reasons
given must be specific.
(b) Apply the BCNF decomposition algorithm to decompose R into a set of BCNF tables.
If this cannot be done, explain why.

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