Consider a schema R and a set F of functional dependencies as follows: R = (A,B,C,D,E). F = {A → BC,CD → E,B →D,E → A}. Determine whether or not the following decomposition of R is a lossless decomposition: R = (A, B, C), R2 = (A, D, E). Show your computational steps as you derive the answer.
Consider a schema R and a set F of functional dependencies as follows: R = (A,B,C,D,E). F = {A → BC,CD → E,B →D,E → A}. Determine whether or not the following decomposition of R is a lossless decomposition: R = (A, B, C), R2 = (A, D, E). Show your computational steps as you derive the answer.
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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Transcribed Image Text:Consider a schema R and a set F of functional dependencies as follows:
R = (A,B,C,D,E).
F = {A → BC,CD → E,B →D,E → A}.
Determine whether or not the following decomposition of R is a lossless decomposition:
R = (A, B, C), R2 = (A, D, E).
Show your computational steps as you derive the answer.
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