Database Concepts (7th Edition)
7th Edition
ISBN: 9780133544626
Author: David M. Kroenke, David J. Auer
Publisher: PEARSON
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Expert Solution & Answer
Chapter 5, Problem 5.3RQ
Explanation of Solution
Normalization:
In
Normalization is mainly used for two purposes. They are:
- Reduce or eliminate redundancy in the database table.
- Ensuring data dependencies.
Importance of Normalization process:
- The normalization process is important while creating a table in the database, because the process will eliminate the redundancy of data in the database table.
- The normalization process is then applied to each relation and the extra relations are created.
Example:
Consider the example of the above scenario is as follows:
number | name | age | sex | course |
1 | John | 23 | M | C1 |
2 |
Expert Solution & Answer
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What is the normalization of this table?
Explain the process of decomposition in normalization. How do you decompose a table into multiple tables while preserving data integrity?
Describe the process of decomposing a table into multiple related tables to achieve higher levels of normalization.
Chapter 5 Solutions
Database Concepts (7th Edition)
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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- Insert the data into the tables you created in Problem 1.arrow_forwardWhat is a primary key? What is the primary key for each of the tables in the Colonial Adventure Tours database shown in Chapter 1?arrow_forwardHow is the processing of SQL DDL statements (such as CREATE TABLE) different from the processing required by DML statements?arrow_forward
- The benefits of using tables in relational databases are many, so how about we go through some of them? Would you be willing to elaborate on the concept of NULL in a short essay?arrow_forwardWhat is a surrogate key, and when should you use one? What are the defects created within unnormalized tables?arrow_forwardWhen we use Microsoft Access to generate our tables, how do we know which model to develop?arrow_forward
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