10 Questions
Which of the following is a characteristic of a suitable set of relations after normalization?
Minimal redundancy with each attribute represented only once
What is the purpose of normalization in database design?
To minimize data redundancies in a database
Which approach uses normalization as a bottom-up standalone database design technique?
Approach 1
What is the association between functional dependency and normalization?
Functional dependency is essential for normalization
What is the benefit of minimizing data redundancies in a database through normalization?
Reduce storage space required
Which of the following is NOT a characteristic of a suitable set of relations after normalization?
Attributes with a close logical relationship are found in different relations
What is the main purpose of normalization in database design?
To reduce storage space required to store the data
Which of the following is NOT a potential problem associated with relational database design?
Functional dependency
What is the primary benefit of normalization in a database?
Minimize data redundancies
What role do attributes forming part of foreign keys play in a suitable set of relations after normalization?
They are essential for joining related relations
Study Notes
Characteristics of a Suitable Set of Relations
- A suitable set of relations after normalization has minimal data redundancy and data anomalies.
- Each relation has minimal data redundancy and is in a higher normal form.
Purpose of Normalization
- The purpose of normalization in database design is to minimize data redundancy and eliminate data anomalies.
Approach Using Normalization
- The bottom-up approach uses normalization as a standalone database design technique.
Functional Dependency and Normalization
- Functional dependency is a key concept in normalization, where a non-key attribute is fully functional dependent on a key attribute.
- Normalization ensures that each table has a primary key that uniquely identifies each record.
Benefits of Normalization
- Normalization minimizes data redundancies, ensuring data consistency and reducing data anomalies.
- Normalization reduces data redundancy, which reduces storage requirements and improves data integrity.
Non-Characteristic of a Suitable Set of Relations
- A suitable set of relations after normalization does not have partial dependencies or transitive dependencies.
Main Purpose of Normalization
- The main purpose of normalization in database design is to minimize data redundancy and eliminate data anomalies.
Potential Problems in Relational Database Design
- Data redundancy and data anomalies are potential problems associated with relational database design.
Primary Benefit of Normalization
- The primary benefit of normalization in a database is to minimize data redundancy and eliminate data anomalies.
Role of Attributes in Foreign Keys
- Attributes forming part of foreign keys play a crucial role in a suitable set of relations after normalization, ensuring referential integrity.
Test your knowledge of database normalization with this quiz. Covering topics such as the purpose of normalization, identifying problems in relational database design, functional dependencies, and the different normal forms including 1NF, 2NF, 3NF, and BCNF.
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