Rigorous Database Normalisation Test - 69+ MCQs: Database Normalisation Quiz: Test Your Knowledge with Database Design Questions and Answers

1. Why is it important to avoid update anomalies in a normalized database?

To minimize storage space

To ensure data consistency

To simplify data retrieval

To enforce foreign key constraints

2. What challenges may arise when normalizing a database that contains historical data?

Increased storage space

Difficulty in query optimization

Introduction of update anomalies

Simplified data retrieval

3. How can the use of a surrogate key impact the process of data migration in a database?

It simplifies data migration

It complicates data migration

It ensures atomicity in data migration

It accelerates data migration

4. In database normalization, what is a candidate key?

A key chosen by the database administrator

A key that uniquely identifies a record

A key used for foreign key relationships

A key that may become a primary key

5. How does the presence of null values impact the normalization process?

It simplifies the normalization process

It introduces challenges in normalization

It ensures data consistency

It accelerates query performance

6. In the context of database design, what is a superkey?

A key chosen by the database administrator

A key that uniquely identifies a record

A key used for foreign key relationships

A key that includes additional attributes

7. What is the primary goal of database normalisation?

Improve query performance

Minimize redundancy

Maximize data storage

Simplify user interfaces

8. What challenges may arise when denormalizing a database for the purpose of optimizing query performance?

Increased storage space

Introduction of update anomalies

Difficulty in maintaining data consistency

Simplified data retrieval

9. Which normal form ensures that there are no transitive dependencies and no partial dependencies?

First Normal Form (1NF)

Second Normal Form (2NF)

Third Normal Form (3NF)

Boyce-Codd Normal Form (BCNF)

10. When might it be appropriate to use database partitioning in a normalized database environment?

To minimize update anomalies

To improve query performance

To simplify data retrieval

To enforce primary key constraints

Database Normalisation MCQ Test 5