Normalization Quiz With Answers

Computer MCQs 360May 6, 2024

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Welcome to the Normalization MCQs with Answers. In this post, we have shared Normalization Online Test for different competitive exams. Find practice Normalization Practice Questions with answers in Computer Tests exams here. Each question offers a chance to enhance your knowledge regarding Normalization.

Normalization Online Quiz

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Test Name: Normalization MCQ Quiz Practice
Type: Quiz Test
Total Questions: 40
Total Marks: 40
Time: 40 minutes

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Normalization

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1 / 40

In which normal form should a table be to eliminate all anomalies and ensure lossless-join dependency preservation?

Fourth normal form (4NF)

Fifth normal form (5NF)

Sixth normal form (6NF)

2 / 40

Which normal form is the highest level of normalization and rarely used in practical applications?

Sixth normal form (6NF)

Eighth normal form (8NF)

Seventh normal form (7NF)

3 / 40

What does "dependency preservation" mean in the context of normalization?

Ensures all dependencies are eliminated

Ensures all dependencies are preserved after decomposition

Ensures all dependencies are optimized

4 / 40

Which normal form allows no non-trivial multivalued dependencies and no join dependencies?

Fifth normal form (5NF)

Sixth normal form (6NF)

Seventh normal form (7NF)

5 / 40

Which normal form is also known as "Domain/Key Normal Form (DKNF)"?

Sixth normal form (6NF)

Fifth normal form (5NF)

Seventh normal form (7NF)

6 / 40

Which normal form is considered sufficient for most practical database design purposes?

Boyce-Codd normal form (BCNF)

Fifth normal form (5NF)

Third normal form (3NF)

7 / 40

Which normal form focuses on ensuring that every non-trivial functional dependency is a superkey?

Fourth normal form (4NF)

Boyce-Codd normal form (BCNF)

Fifth normal form (5NF)

8 / 40

What is a determinant in the context of database normalization?

Indexing attributes

Set of attributes that uniquely determine other attributes

Query execution plan

9 / 40

What is a composite key in database normalization?

Single attribute key

Combination of multiple attributes that uniquely identify a row

Primary key

10 / 40

Which attribute(s) in a table should be eliminated to achieve 2NF?

Candidate keys

Partial dependencies

Transitive dependencies

11 / 40

Which normal form is derived from the concept of multi-valued dependencies?

Sixth normal form (6NF)

Fifth normal form (5NF)

Fourth normal form (4NF)

12 / 40

Which normal form ensures that there are no non-trivial join dependencies and all attributes are fully functional dependent on the primary key?

Sixth normal form (6NF)

Fifth normal form (5NF)

Boyce-Codd normal form (BCNF)

13 / 40

Which type of dependency should be eliminated to achieve 3NF?

Partial dependencies

Transitive dependencies

Functional dependencies

14 / 40

What is the process of organizing data attributes to minimize redundancy and dependency?

Indexing

Query optimization

Normalization

15 / 40

What is the primary disadvantage of over-normalizing a database?

Increased complexity

Reduced redundancy

Optimized query performance

16 / 40

What does "eliminating redundancy" mean in the context of database normalization?

Storing data thrice

Storing data once

Storing data twice

17 / 40

What is the purpose of redundancy in database normalization?

Optimize query indexing

Minimize redundant data

Maximize redundant data

18 / 40

What does the term "atomicity" mean in the context of normalization?

Each table contains only atomic values

Each query contains only atomic values

Each attribute contains only atomic values

19 / 40

Which normal form requires a table to be in 4NF and handle complex data dependencies?

Boyce-Codd normal form (BCNF)

Fifth normal form (5NF)

Sixth normal form (6NF)

20 / 40

Which normal form is rarely used in practice due to its stringent requirements?

Eighth normal form (8NF)

Seventh normal form (7NF)

Sixth normal form (6NF)

21 / 40

What is the primary advantage of normalization in database design?

Minimize data redundancy

Maximize data redundancy

Optimize query execution

22 / 40

Which normal form ensures that there are no transitive dependencies and all attributes are key-dependent?

Fourth normal form (4NF)

Boyce-Codd normal form (BCNF)

Fifth normal form (5NF)

23 / 40

What is the purpose of decomposing tables in normalization?

Increase redundancy

Reduce query optimization

Eliminate redundancy and anomalies

24 / 40

What is a key attribute in the context of database normalization?

Foreign key

Unique identifier

Attribute used for indexing

25 / 40

What does the term "anomaly" refer to in the context of database normalization?

Inconsistencies in data indexing

Inconsistencies in data retrieval

Inconsistencies in data storage

26 / 40

Which normal form focuses on eliminating join dependencies and ensuring lossless decomposition?

Seventh normal form (7NF)

Fifth normal form (5NF)

Sixth normal form (6NF)

27 / 40

Which normal form allows multivalued dependencies between attributes?

Fourth normal form (4NF)

Sixth normal form (6NF)

Fifth normal form (5NF)

28 / 40

Which normal form requires a table to be in 3NF and no transitive dependencies?

Fourth normal form (4NF)

Boyce-Codd normal form (BCNF)

Fifth normal form (5NF)

29 / 40

What is a partial dependency in the context of normalization?

Non-key attribute depends on a part of the candidate key

Key attribute depends on a non-key attribute

Non-key attribute depends on the entire candidate key

30 / 40

What does the term "repeating groups" refer to in database normalization?

Multiple tables for a single query

Multiple values in a single attribute

Multiple rows for a single entity

31 / 40

In which normal form should a table be to eliminate transitive dependencies?

Fourth normal form (4NF)

Third normal form (3NF)

Fifth normal form (5NF)

32 / 40

Which normal form is essential for ensuring that there are no partial or transitive dependencies?

Seventh normal form (7NF)

Fifth normal form (5NF)

Sixth normal form (6NF)

33 / 40

What is the purpose of ensuring data integrity through normalization?

Reduce anomalies

Simplify data retrieval

Maximize data redundancy

34 / 40

Which normal form ensures that there are no partial dependencies in a table?

Boyce-Codd normal form (BCNF)

Second normal form (2NF)

Third normal form (3NF)

35 / 40

Which normal form ensures that there are no repeating groups in a table?

Second normal form (2NF)

Third normal form (3NF)

First normal form (1NF)

36 / 40

What is a functional dependency in the context of normalization?

Dependency between tables

Dependency between attributes

Dependency between queries

37 / 40

Which normal form requires a table to be in 2NF and no transitive dependencies?

Boyce-Codd normal form (BCNF)

Fourth normal form (4NF)

Third normal form (3NF)

38 / 40

What is the purpose of Boyce-Codd normal form (BCNF) in database normalization?

Optimizes query performance

Ensures atomicity

Further eliminates anomalies

39 / 40

What does "lossless-join dependency preservation" mean in the context of normalization?

Original data is optimized

Original data can be reconstructed from decomposed tables

Original data cannot be reconstructed

40 / 40

What is the primary goal of database normalization?

Optimize indexing

Maximize redundancy

Minimize redundancy

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Computer MCQs 360May 6, 2024

0 21 1 minute read