Normalization MCQs 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

What is the primary goal of database normalization?

Minimize redundancy

Maximize redundancy

Optimize indexing

2 / 40

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

Sixth normal form (6NF)

Fifth normal form (5NF)

Seventh normal form (7NF)

3 / 40

Which normal form allows multivalued dependencies between attributes?

Fourth normal form (4NF)

Sixth normal form (6NF)

Fifth normal form (5NF)

4 / 40

What is the primary advantage of normalization in database design?

Maximize data redundancy

Minimize data redundancy

Optimize query execution

5 / 40

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

Ensures all dependencies are optimized

Ensures all dependencies are eliminated

Ensures all dependencies are preserved after decomposition

6 / 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

7 / 40

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

Third normal form (3NF)

Boyce-Codd normal form (BCNF)

Fourth normal form (4NF)

8 / 40

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

Fifth normal form (5NF)

Seventh normal form (7NF)

Sixth normal form (6NF)

9 / 40

What is the purpose of ensuring data integrity through normalization?

Simplify data retrieval

Reduce anomalies

Maximize data redundancy

10 / 40

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

Seventh normal form (7NF)

Sixth normal form (6NF)

Fifth normal form (5NF)

11 / 40

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

Seventh normal form (7NF)

Eighth normal form (8NF)

Sixth normal form (6NF)

12 / 40

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

Optimized query performance

Increased complexity

Reduced redundancy

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?

Normalization

Query optimization

Indexing

15 / 40

What is a functional dependency in the context of normalization?

Dependency between queries

Dependency between attributes

Dependency between tables

16 / 40

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

Eighth normal form (8NF)

Sixth normal form (6NF)

Seventh normal form (7NF)

17 / 40

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

Optimizes query performance

Further eliminates anomalies

Ensures atomicity

18 / 40

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

Fifth normal form (5NF)

Sixth normal form (6NF)

Fourth normal form (4NF)

19 / 40

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

Multiple rows for a single entity

Multiple tables for a single query

Multiple values in a single attribute

20 / 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

21 / 40

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

Boyce-Codd normal form (BCNF)

Third normal form (3NF)

Second normal form (2NF)

22 / 40

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

Fifth normal form (5NF)

Boyce-Codd normal form (BCNF)

Sixth normal form (6NF)

23 / 40

What is a determinant in the context of database normalization?

Query execution plan

Set of attributes that uniquely determine other attributes

Indexing attributes

24 / 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)

25 / 40

What is a partial dependency in the context of normalization?

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

Non-key attribute depends on the entire candidate key

Key attribute depends on a non-key attribute

26 / 40

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

Transitive dependencies

Candidate keys

Partial dependencies

27 / 40

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

Boyce-Codd normal form (BCNF)

Fifth normal form (5NF)

Sixth normal form (6NF)

28 / 40

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

Third normal form (3NF)

Second normal form (2NF)

First normal form (1NF)

29 / 40

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

Boyce-Codd normal form (BCNF)

Third normal form (3NF)

Fifth normal form (5NF)

30 / 40

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

Boyce-Codd normal form (BCNF)

Fifth normal form (5NF)

Fourth normal form (4NF)

31 / 40

What is the purpose of decomposing tables in normalization?

Reduce query optimization

Increase redundancy

Eliminate redundancy and anomalies

32 / 40

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

Sixth normal form (6NF)

Fourth normal form (4NF)

Fifth normal form (5NF)

33 / 40

What is the purpose of redundancy in database normalization?

Optimize query indexing

Maximize redundant data

Minimize redundant data

34 / 40

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

Seventh normal form (7NF)

Sixth normal form (6NF)

Fifth normal form (5NF)

35 / 40

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

Boyce-Codd normal form (BCNF)

Fourth normal form (4NF)

Fifth normal form (5NF)

36 / 40

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

Storing data thrice

Storing data once

Storing data twice

37 / 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)

38 / 40

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

Attribute used for indexing

Unique identifier

Foreign key

39 / 40

What is a composite key in database normalization?

Primary key

Single attribute key

Combination of multiple attributes that uniquely identify a row

40 / 40

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

Each query contains only atomic values

Each attribute contains only atomic values

Each table contains only atomic values

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Computer MCQs 360May 6, 2024

0 20 1 minute read