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 process of organizing data attributes to minimize redundancy and dependency?

Normalization

Query optimization

Indexing

2 / 40

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

Fifth normal form (5NF)

Fourth normal form (4NF)

Sixth normal form (6NF)

3 / 40

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

Fifth normal form (5NF)

Seventh normal form (7NF)

Sixth normal form (6NF)

4 / 40

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

Fifth normal form (5NF)

Sixth normal form (6NF)

Boyce-Codd normal form (BCNF)

5 / 40

What is the purpose of decomposing tables in normalization?

Reduce query optimization

Eliminate redundancy and anomalies

Increase redundancy

6 / 40

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

Sixth normal form (6NF)

Boyce-Codd normal form (BCNF)

Fifth normal form (5NF)

7 / 40

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

Third normal form (3NF)

Boyce-Codd normal form (BCNF)

Second normal form (2NF)

8 / 40

What is a partial dependency in the context of normalization?

Non-key attribute depends on the entire candidate key

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

Key attribute depends on a non-key attribute

9 / 40

What is the purpose of redundancy in database normalization?

Maximize redundant data

Minimize redundant data

Optimize query indexing

10 / 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)

11 / 40

Which normal form allows multivalued dependencies between attributes?

Fifth normal form (5NF)

Fourth normal form (4NF)

Sixth normal form (6NF)

12 / 40

What is a functional dependency in the context of normalization?

Dependency between queries

Dependency between attributes

Dependency between tables

13 / 40

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

Transitive dependencies

Functional dependencies

Partial dependencies

14 / 40

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

Inconsistencies in data indexing

Inconsistencies in data storage

Inconsistencies in data retrieval

15 / 40

What is the purpose of ensuring data integrity through normalization?

Simplify data retrieval

Reduce anomalies

Maximize data redundancy

16 / 40

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

Transitive dependencies

Partial dependencies

Candidate keys

17 / 40

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

Fourth normal form (4NF)

Fifth normal form (5NF)

Boyce-Codd normal form (BCNF)

18 / 40

What is a determinant in the context of database normalization?

Set of attributes that uniquely determine other attributes

Query execution plan

Indexing attributes

19 / 40

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

First normal form (1NF)

Third normal form (3NF)

Second normal form (2NF)

20 / 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)

21 / 40

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

Third normal form (3NF)

Fourth normal form (4NF)

Fifth normal form (5NF)

22 / 40

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

Ensures all dependencies are optimized

Ensures all dependencies are preserved after decomposition

Ensures all dependencies are eliminated

23 / 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)

24 / 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)

25 / 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

26 / 40

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

Fifth normal form (5NF)

Third normal form (3NF)

Boyce-Codd normal form (BCNF)

27 / 40

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

Each attribute contains only atomic values

Each query contains only atomic values

Each table contains only atomic values

28 / 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)

29 / 40

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

Optimized query performance

Increased complexity

Reduced redundancy

30 / 40

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

Sixth normal form (6NF)

Fifth normal form (5NF)

Seventh normal form (7NF)

31 / 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)

32 / 40

What is a composite key in database normalization?

Primary key

Single attribute key

Combination of multiple attributes that uniquely identify a row

33 / 40

What is the primary advantage of normalization in database design?

Optimize query execution

Maximize data redundancy

Minimize data redundancy

34 / 40

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

Further eliminates anomalies

Ensures atomicity

Optimizes query performance

35 / 40

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

Sixth normal form (6NF)

Eighth normal form (8NF)

Seventh normal form (7NF)

36 / 40

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

Sixth normal form (6NF)

Fifth normal form (5NF)

Fourth normal form (4NF)

37 / 40

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

Storing data twice

Storing data thrice

Storing data once

38 / 40

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

Foreign key

Attribute used for indexing

Unique identifier

39 / 40

What is the primary goal of database normalization?

Optimize indexing

Minimize redundancy

Maximize redundancy

40 / 40

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

Multiple values in a single attribute

Multiple rows for a single entity

Multiple tables for a single query

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Computer MCQs 360May 6, 2024

0 11 1 minute read