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 →→ EE → BCFGBE →→ AC

Dear Student,In order to answer this question it is important to understand the concept of lossless…

Answered: 5: Consider S from Q2. Is the decomp…

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

Problem 1PE

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Concept explainers

Intermediate SQL Concepts

A query is a request for data or information from one or more database tables. This information could be presented in the form of pictorials, graphs, or complicated findings which helps in easy interpretation. Structured Query Language (SQL) is the most widely used programming language for retrieving and organizing data from relational databases. Collection of tables with rows and columns is referred to as a database. SQL is the language of databases. It makes it easier to extract specific data from databases, which can then be used for analysis.

Question

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

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