5: Consider S from Q2. Is the decomp ossless join decomposition? hoose one of the following queries as ELECT 'lossy'; I FOT

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
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Q5: Consider S from Q2. Is the decomposition of S into S1 (E,G,F) and S2(A,B,C,D,G)
a lossless join decomposition?
Choose one of the following queries as your answer:
SELECT 'lossy';
SELECT 'lossless';
Submit your chosen query in file Q5.sql.
Transcribed Image Text:Q5: Consider S from Q2. Is the decomposition of S into S1 (E,G,F) and S2(A,B,C,D,G) a lossless join decomposition? Choose one of the following queries as your answer: SELECT 'lossy'; SELECT 'lossless'; Submit your chosen query in file Q5.sql.
S(A,B,C,D,E,F,G)
D →→ E
E → B
CFG
BE →→ AC
Transcribed Image Text:S(A,B,C,D,E,F,G) D →→ E E → B CFG BE →→ AC
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