MySQL Online Quiz

Welcome to our MySQL Online Quiz Test for Beginners! In this blog post, you'll find a set of 20 multiple-choice questions that are designed to test your basic knowledge and understanding of MySQL, one of the most popular relational database management systems. This quiz will cover fundamental topics from basic commands and operations to key features and functionalities of MySQL. Each question includes an answer and a brief explanation to help reinforce your learning and clarify important concepts.

This quiz is designed to help you assess your understanding of MySQL as you begin or continue your journey in database management. Keep practicing and exploring more advanced topics to enhance your skills!

1. What is MySQL?

a) A programming language

b) A web server

c) A relational database management system

d) A web browser

2. Which SQL statement is used to retrieve data from a database in MySQL?

a) GET

b) SELECT

c) PULL

d) EXTRACT

3. What is the default port number used by MySQL?

a) 8080

b) 3306

c) 1433

d) 1521

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

a) CREATE DATABASE

b) NEW DATABASE

c) MAKE DATABASE

d) SETUP DATABASE

5. How do you insert a record into a table in MySQL?

a) INSERT RECORD

b) ADD NEW

c) INSERT INTO

d) NEW ENTRY

6. What type of join returns all records from the left table and matched records from the right table?

a) Inner Join

b) Left Join

c) Right Join

d) Full Join

7. What does the WHERE clause do in a SQL query?

a) Specifies which tables to use

b) Limits the rows returned in the query result

c) Groups rows that have the same values in specified columns together

d) Orders the result set of a query

8. What is the purpose of the PRIMARY KEY in a MySQL table?

a) To unlock the database

b) To create backups

c) To uniquely identify each record in a table

d) To enhance performance

9. Which function can be used to count the number of rows in a SQL query?

a) SUM()

b) COUNT()

c) AVG()

d) TOTAL()

10. How do you delete a table in MySQL?

a) DELETE TABLE

b) REMOVE TABLE

c) DROP TABLE

d) ERASE TABLE

11. What does the LIKE operator do in a query?

a) Sorts the result set in ascending or descending order

b) Filters records, returning only those that match a specified pattern

c) Combines columns from two tables based on the rows' relationships

d) Updates data in a database

12. How do you add a column to an existing MySQL table?

a) ADD COLUMN

b) INSERT COLUMN

c) ALTER TABLE ADD COLUMN

d) UPDATE TABLE ADD COLUMN

13. What is the command to change a column's data type in a MySQL table?

a) CHANGE COLUMN

b) MODIFY COLUMN

c) ALTER COLUMN

d) UPDATE COLUMN

14. Which type of backup provides a full backup of all databases on a MySQL server?

a) Logical Backup

b) Physical Backup

c) Differential Backup

d) Complete Backup

15. What is MySQL Workbench?

a) A database performance tool

b) A SQL server management tool

c) A visual database design tool

d) A data mining tool

16. Which statement is used to modify existing data in a MySQL table?

a) MODIFY DATA

b) CHANGE DATA

c) UPDATE

d) ALTER

17. What is the purpose of the HAVING clause in MySQL?

a) To specify conditions for groups created by GROUP BY

b) To define which database to use

c) To limit the number of rows returned

d) To list the tables in the database

18. Which SQL clause is used to sort the result-set?

a) SORT BY

b) GROUP BY

c) ORDER BY

d) ALIGN BY

19. How can you prevent SQL injection in MySQL?

a) Using regular expressions

b) By using prepared statements

c) By storing data in XML format

d) By enabling strict mode

20. What is a transaction in MySQL?

a) A group of SQL queries executed as a single unit

b) A single SQL query

c) A backup process

d) A type of SQL join