Normal Forms

What is the purpose of First Normal Form (1NF)?

• To increase data redundancy and ensure non-atomic values in each column.

• To allow duplicate data and ensure non-atomic values in each column.

• To eliminate duplicate data and allow atomic values in each column.

• To eliminate duplicate data and ensure atomic values in each column.

Which of the following is a characteristic of Second Normal Form (2NF)?

• All non-key attributes must be transitively dependent on the primary key.

• All non-key attributes must be fully dependent on the primary key.

• All attributes must be fully dependent on the primary key.

• All non-key attributes must be partially dependent on the primary key.

In Third Normal Form (3NF), what does it mean for a non-key attribute to be transitively dependent on the primary key?

• A non-key attribute is transitively dependent on the primary key if it is not related to the primary key at all.

• A non-key attribute is transitively dependent on the primary key if it is directly dependent on the primary key.

• A non-key attribute is transitively dependent on the primary key if it is only dependent on other non-key attributes.

• A non-key attribute is transitively dependent on the primary key if it depends on another non-key attribute that depends on the primary key.

What is the main difference between Second Normal Form (2NF) and Third Normal Form (3NF)?

• 2NF eliminates transitive dependencies, while 3NF eliminates partial dependencies.

• 2NF eliminates all dependencies, while 3NF eliminates only some dependencies.

• 2NF eliminates partial dependencies, while 3NF eliminates transitive dependencies.

• 2NF eliminates transitive dependencies, while 3NF eliminates all dependencies.

Which normal form is based on the concept of functional dependencies?

• 1NF

• BCNF

• 3NF

• 2NF

What is the purpose of Boyce-Codd Normal Form (BCNF)?

• To eliminate redundancy and anomalies in a relational database.

• To simplify data retrieval in a relational database.

• To improve data integrity in a relational database.

• To increase redundancy and anomalies in a relational database.

Which normal form is considered the highest level of normalization?

• 3NF

• 6NF

• 2NF

• 1NF

In First Normal Form (1NF), what is the requirement for a relation?

• Primary key and atomic attributes

• No duplicate tuples and no repeating groups

• Foreign key and composite attributes

• No null values and no derived attributes

What is the primary goal of normalization?

• Minimize data redundancy and improve data integrity

• Minimize data redundancy and worsen data integrity

• Ignore data redundancy and improve data integrity

• Maximize data redundancy and improve data integrity

Which normal form eliminates all non-key dependencies?

• First Normal Form (1NF)

• Second Normal Form (2NF)

• Fourth Normal Form (4NF)

• Third Normal Form (3NF)