EBK DATABASE CONCEPTS
7th Edition
ISBN: 9780133777840
Author: AUER
Publisher: VST
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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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Explain why it is beneficial to first go through the normalization procedure and then denormalize.
Explain why it makes sense to go through the normalization procedure first and then the denormalization process after that.
Select operations in relational databases are used to reduce the number of columns in a table based on predefined conditions.Where do you stand on this?
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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- Explain the process of decomposition in normalization. How do you decompose a table into multiple tables while preserving data integrity?arrow_forwardExplain the different types of tables in the ABAP dictionary.arrow_forwardnormalize this table. it's a traditional database. Should you keep it that way?arrow_forward
- The one-to-many relationship between two tables is made by including the primary key from one table into the other, thus making it a: (SELECT ONLY ONE ANSWER) A)Compound key B) Foreign key C) Important key D)Primary keyarrow_forwardExplain the use of derived tables.arrow_forwardUsing the SQL programming language, how would one go about changing the structure of an existing table? Which of these more significant types of shifts could be open to discussion as an option? Which commands need to be executed in order for these modifications to take effect?arrow_forward
- Explain why it makes sense to first go through the normalization process and then denormalizearrow_forwardSelected columns are removed from a table using a relational database's "select" method.It's possible that I'm mistaken.arrow_forwardHow may the structure of a table be altered via the usage of the SQL language? Which of these important alterations should be put up as possible options for consideration? What specific commands have to be run in order for these alterations to take effect?arrow_forward
- What is normalization? Explain the normal forms of normalization.arrow_forwardDefine second normal form. What types of problems would you find in tables that are not in second normal form?arrow_forwardHow exactly does one go about utilizing the SQL programming language to change the format of an existing table? Which of these more substantial types of shifts could be open to discussion and consideration? In order for these changes to take effect, which commands need to be executed?arrow_forward
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