Suppose a relation schema R = (A, B, C, D) is decomposed into following relations R1(A,B,C) and R2(B,D). Consider relation R with FD's: {A →B, B →C, C→D}. Prove that this decomposition is lossless join decomposition.

Suppose a relation schema R = (A, B, C, D) is decomposed into following relations R1(A,B,C) and R2(B,D). Consider relation R with FD's: {A →B, B →C, C→D}. Prove that this decomposition is lossless join decomposition.

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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Suppose a relation schema R = (A, B, C, D) is decomposed into following relations R1(A,B,C)
and R2(B,D). Consider relation R with FD's: {A →B, B →C, C→D}.
Prove that this decomposition is lossless join decomposition.

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