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Questions and Answers
Which of the following is NOT a reason for normalization?
Which of the following is NOT a reason for normalization?
- To ensure well-defined relations
- To improve query performance (correct)
- To avoid data anomalies
- To minimize data redundancy
What is the main objective of normalization?
What is the main objective of normalization?
- To minimize data redundancy
- To maximize data storage
- To improve query performance
- To ensure well-defined relations (correct)
Which of the following is a characteristic of a well-normalized table?
Which of the following is a characteristic of a well-normalized table?
- Nonprime attributes are independent of the primary key (correct)
- Data items are unnecessarily stored in multiple tables
- The table exhibits insert, update, and delete anomalies
- Each table represents multiple subjects
What is the purpose of functional dependency in normalization?
What is the purpose of functional dependency in normalization?
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What does the normalization process aim to achieve?
What does the normalization process aim to achieve?
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Study Notes
Normalization
- Normalization is not used to improve data security.
Objectives of Normalization
- The main objective of normalization is to minimize data redundancy and dependency.
Characteristics of a Well-Normalized Table
- A well-normalized table has minimal data redundancy and dependency.
Functional Dependency in Normalization
- Functional dependency is used to identify the relationship between attributes in a table, helping to eliminate data redundancy and anomalies.
Purpose of the Normalization Process
- The normalization process aims to organize data in a database to minimize data redundancy, improve data integrity, and reduce anomalies.
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