EBK DATABASE CONCEPTS
7th Edition
ISBN: 9780133544886
Author: AUER
Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)
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Expert Solution & Answer
Chapter 5, Problem 5.5RQ
Explanation of Solution
Denormalization:
A process of combining two relations into one new relation is called as “Denormalization”.
Example:
Consider the example of denormalization is as follows:
Normalized table:
Sales:
| Sales_id | Sales_date | Sales_person |
Product:
| Tax_id | Sales_id | Itm_id | Item_quantity | Sales_rs |
After denormalization the “Product” table is as follows:
| Tax_id | Sales_date | Sales_person | Sales_id | Item_id |
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Chapter 5 Solutions
EBK DATABASE CONCEPTS
Ch. 5 - Explain how entities are transformed into tables.Ch. 5 - Prob. 5.2RQCh. 5 - Prob. 5.3RQCh. 5 - What is denormalization?Ch. 5 - Prob. 5.5RQCh. 5 - Explain the problems that denormalized tables may...Ch. 5 - Explain how the representation of weak entities...Ch. 5 - Explain how supertype and subtype entities are...Ch. 5 - Prob. 5.9RQCh. 5 - Prob. 5.10RQ
Ch. 5 - Show two different ways to represent the 1:1...Ch. 5 - Prob. 5.12RQCh. 5 - Prob. 5.13RQCh. 5 - Prob. 5.14RQCh. 5 - Prob. 5.15RQCh. 5 - Prob. 5.16RQCh. 5 - For your answer to question 5.15, code an SQL...Ch. 5 - Prob. 5.18RQCh. 5 - Prob. 5.20RQCh. 5 - Prob. 5.21RQCh. 5 - Explain how the terms parent table and child table...Ch. 5 - For your answers to questions 5.20, 5.21, and...Ch. 5 - Prob. 5.24RQCh. 5 - Prob. 5.25RQCh. 5 - Prob. 5.26RQCh. 5 - Prob. 5.27RQCh. 5 - Prob. 5.28RQCh. 5 - Define the three types of recursive binary...Ch. 5 - Prob. 5.30RQCh. 5 - Prob. 5.31RQCh. 5 - Prob. 5.32RQCh. 5 - Prob. 5.33RQCh. 5 - Prob. 5.34RQCh. 5 - Code an SQL statement that creates a table with...
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