10 Multiple-Choice Questions about MySQL

Introduction to MySQL

MySQL is a popular open-source relational database management system (RDBMS) that is widely used for web applications and other data-driven projects. It provides a powerful and flexible platform for storing, organizing, and manipulating data. In this blog post, we will explore 10 multiple-choice questions related to MySQL along with their answers and explanations.

Question 1:

What does SQL stand for?

a) Structured Query Language

b) Sequential Query Language

c) Server Query Language

d) Standard Query Language

Answer: a) Structured Query Language

Explanation: SQL stands for Structured Query Language, which is a standard language for managing and manipulating relational databases.

Question 2:

Which command is used to create a new database in MySQL?

a) CREATE TABLE

b) CREATE DATABASE

c) INSERT INTO

d) ALTER DATABASE

Answer: b) CREATE DATABASE

Explanation: The CREATE DATABASE command is used to create a new database in MySQL.

Question 3:

Which operator is used for pattern matching in MySQL?

a) LIKE

b) IN

c) BETWEEN

d) IS NULL

Answer: a) LIKE

Explanation: The LIKE operator is used for pattern matching in MySQL. It allows you to search for values that match a specified pattern.

Question 4:

Which keyword is used to retrieve data from a MySQL database?

a) SELECT

b) UPDATE

c) DELETE

d) INSERT

Answer: a) SELECT

Explanation: The SELECT keyword is used to retrieve data from a MySQL database. It allows you to query the database and fetch the desired data.

Question 5:

Which command is used to update data in a MySQL database?

a) UPDATE

b) INSERT

c) DELETE

d) MODIFY

Answer: a) UPDATE

Explanation: The UPDATE command is used to update data in a MySQL database. It allows you to modify existing records or columns.

Question 6:

Which command is used to delete data from a MySQL database?

a) DELETE

b) DROP

c) TRUNCATE

d) REMOVE

Answer: a) DELETE

Explanation: The DELETE command is used to delete data from a MySQL database. It allows you to remove specific records or entire tables.

Question 7:

Which command is used to add a new column to an existing table in MySQL?

a) ALTER TABLE

b) ADD COLUMN

c) CREATE COLUMN

d) UPDATE TABLE

Answer: a) ALTER TABLE

Explanation: The ALTER TABLE command is used to add a new column to an existing table in MySQL. It allows you to modify the structure of a table.

Question 8:

Which function is used to calculate the average value of a column in MySQL?

a) AVG()

b) SUM()

c) COUNT()

d) MAX()

Answer: a) AVG()

Explanation: The AVG() function is used to calculate the average value of a column in MySQL. It returns the average as a decimal number.

Question 9:

Which command is used to grant privileges to a user in MySQL?

a) GRANT

b) CREATE USER

c) SET PRIVILEGES

d) ALLOW ACCESS

Answer: a) GRANT

Explanation: The GRANT command is used to grant privileges to a user in MySQL. It allows you to specify the level of access and permissions for a user.

Question 10:

Which statement is used to sort the result set in ascending order in MySQL?

a) ORDER BY ASC

b) ORDER BY DESC

c) SORT ASC

d) SORT DESC

Answer: a) ORDER BY ASC

Explanation: The ORDER BY ASC statement is used to sort the result set in ascending order in MySQL. It arranges the data in ascending order based on the specified column.

These were 10 multiple-choice questions related to MySQL along with their answers and explanations. By understanding these concepts, you can enhance your knowledge and skills in working with MySQL databases.