First Normal Form(1NF)

Question 1

What is First Normal Form (1NF)?

Answer 1

1NF is a database normalization form that ensures each column in a table contains atomic values and there are no repeating groups.

Question 2

True or False: First Normal Form (1NF) allows for multi-valued attributes.

Answer 2

False

Question 3

What is the primary goal of achieving First Normal Form (1NF) in database design?

Answer 3

To eliminate redundancy and ensure data integrity.

Question 4

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

Answer 4

Each column contains a single, indivisible value.

Question 5

Fill in the blank: First Normal Form (1NF) ensures that each ______ contains atomic values.

Answer 5

column

Question 6

What is the significance of eliminating repeating groups in First Normal Form (1NF)?

Answer 6

It prevents data redundancy and inconsistency.

Question 7

In First Normal Form (1NF), can a table have composite keys?

Answer 7

Yes

Question 8

What is the purpose of normalizing a database to First Normal Form (1NF)?

Answer 8

To structure data in a way that minimizes redundancy and dependencies.

Question 9

True or False: First Normal Form (1NF) requires every row to have a unique identifier.

Answer 9

True

Question 10

What is the primary difference between a table in First Normal Form (1NF) and a table that is not?

Answer 10

1NF tables do not contain repeating groups.

Question 11

Fill in the blank: First Normal Form (1NF) enforces that each ______ has a single value.

Answer 11

attribute

Question 12

What is the main benefit of adhering to First Normal Form (1NF) in database design?

Answer 12

Simplifies data retrieval and maintenance.

Question 13

In First Normal Form (1NF), can a table have nullable columns?

Answer 13

Yes

Question 14

What is the role of a primary key in ensuring First Normal Form (1NF) compliance?

Answer 14

It uniquely identifies each row in the table.

Question 15

True or False: First Normal Form (1NF) eliminates the need for foreign keys.

Answer 15

False

Question 16

What is the key principle behind First Normal Form (1NF) in database normalization?

Answer 16

Atomicity - each value should be indivisible.

Question 17

Fill in the blank: First Normal Form (1NF) helps in reducing data ______.

Answer 17

redundancy

Question 18

What is the impact of violating First Normal Form (1NF) on database performance?

Answer 18

Can lead to data anomalies and inefficiencies.

Question 19

True or False: First Normal Form (1NF) mandates the use of a specific database management system.

Answer 19

False

Question 20

What is the main difference between First Normal Form (1NF) and Second Normal Form (2NF)?

Answer 20

1NF focuses on atomic values within a row, while 2NF deals with dependencies between columns.

Question 21

Fill in the blank: First Normal Form (1NF) is the ______ stage of database normalization.

Answer 21

initial

Question 22

What is the primary reason for normalizing a database to First Normal Form (1NF)?

Answer 22

To make data storage more efficient and improve data integrity.

Question 23

True or False: First Normal Form (1NF) requires all columns in a table to be unique.

Answer 23

False

Question 24

In First Normal Form (1NF), can a table contain composite attributes?

Answer 24

Yes