Database Normalization Quiz

What is the primary purpose of normalization in database design?

• To increase data redundancy

• To minimize data redundancies

• To create more tables

• To eliminate all data

Which normal form is considered the highest level of normalization typically needed for business database design?

• Fourth Normal Form (4NF)

• Second Normal Form (2NF)

• First Normal Form (1NF)

• Third Normal Form (3NF)

What is a characteristic of a table in First Normal Form (1NF)?

• It contains repeating groups

• It includes partial dependencies

• It has transitive dependencies

• All attributes are dependent on the primary key

In the normalization process, what is the first step to convert a table to First Normal Form (1NF)?

• Identify the primary key

• Eliminate the repeating groups

• Identify all dependencies

• Create a dependency diagram

What does it mean for a table to be in Second Normal Form (2NF)?

• It is in 1NF and has no transitive dependencies

• It is in 1NF and has no partial dependencies

• It has repeating groups

• It contains only one attribute

What is a determinant in the context of database normalization?

• An attribute that determines other values within a row

• A foreign key in a relationship

• A primary key of a table

• An attribute that is dependent on another

Which of the following is a potential drawback of denormalization?

• Elimination of data anomalies

• Increased data integrity

• Simplified table structures

• Reduced system speed

What is the main goal of the normalization process?

• To create more complex relationships

• To increase data redundancy

• To ensure all tables are in at least 3NF

• To eliminate all data

What should be evaluated to produce a good normalized set of tables?

• The size of the database

• The number of tables

• Naming conventions and attribute atomicity

• Only the primary keys

What is a common issue with real-world databases regarding normalization?

• They are always perfectly normalized

• They are always in 3NF

• They often have anomalies due to improper design

• They contain too few tables