MariaDB Quiz – MariaDB Multiple Choice Questions and Answers

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MariaDB Quiz – MariaDB Multiple Choice Questions and Answers: Want to improve knowledge over MariaDB concepts? If so, then here is an article for you. Our team has gathered all the Top & Important MariaDB Multiple Choice Questions and Answers and arranged them in an Objective Type Quiz. Thus, you all can prepare for the MariaDB concepts through the MariaDB MCQ Quiz accommodated below. Moreover, you can check your answers instantly after submitting MariaDB MCQ Quiz Questions.

MariaDB Quiz – MariaDB Multiple Choice Questions and Answers

Practice MariaDB MCQ Quiz Questions and Answers

What is MariaDB?
a) A Relational Database Management System (RDBMS)
b) A NoSQL database
c) A data warehouse solution
d) A file storage system
Answer: a) A Relational Database Management System (RDBMS)

Explanation: MariaDB is an open-source, community-driven Relational Database Management System (RDBMS) that was developed as a fork of the MySQL database system. It provides features and functionality that are similar to MySQL but with additional improvements and enhancements.

Which language is used to interact with MariaDB?
a) Python
b) Java
c) SQL
d) Ruby
Answer: c) SQL

Explanation: Structured Query Language (SQL) is used to interact with MariaDB. SQL is a standard language used to manage and manipulate data in relational databases.

What is the default port number for MariaDB?
a) 3306
b) 5432
c) 27017
d) 1521
Answer: a) 3306

Explanation: The default port number for MariaDB is 3306. However, this can be changed during installation or configuration.

Which storage engine is the default in MariaDB?
a) MyISAM
b) InnoDB
c) MongoDB
d) Cassandra
Answer: b) InnoDB

Explanation: InnoDB is the default storage engine used in MariaDB. It provides features such as transaction support, foreign key constraints, and row-level locking.

Which statement is used to create a table in MariaDB?
a) CREATE DATABASE
b) CREATE COLLECTION
c) CREATE TABLE
d) CREATE DOCUMENT
Answer: c) CREATE TABLE

Explanation: The CREATE TABLE statement is used to create a new table in MariaDB. It specifies the columns and their data types, as well as any constraints or indexes.

Which keyword is used to add a new column to an existing table in MariaDB?
a) ADD COLUMN
b) ALTER COLUMN
c) MODIFY COLUMN
d) UPDATE COLUMN
Answer: a) ADD COLUMN

Explanation: The ADD COLUMN keyword is used to add a new column to an existing table in MariaDB. The syntax is: ALTER TABLE table_name ADD COLUMN column_name data_type;

Which function is used to return the current date and time in MariaDB?
a) NOW()
b) TODAY()
c) CURRENT_TIME()
d) GETDATE()
Answer: a) NOW()

Explanation: The NOW() function is used to return the current date and time in MariaDB. The syntax is: SELECT NOW();

Which keyword is used to retrieve data from multiple tables in MariaDB?
a) JOIN
b) MERGE
c) COMBINE
d) UNION
Answer: a) JOIN

Explanation: The JOIN keyword is used to retrieve data from multiple tables in MariaDB. It combines rows from two or more tables based on a related column between them.

Which keyword is used to filter data based on a specific condition in MariaDB?
a) SELECT
b) WHERE
c) FROM
d) ORDER BY
Answer: b) WHERE

Explanation: The WHERE keyword is used to filter data based on a specific condition in MariaDB. It is used with the SELECT statement to retrieve data that meets a certain criteria.
Which function is used to count the number of rows in a table in MariaDB?
a) COUNT()
b) SUM()
c) AVG()
d) MAX()
Answer: a) COUNT()

Explanation: The COUNT() function is used to count the number of rows in a table in MariaDB. It can also be used with a specific column to count the number of non-null values.

Which keyword is used to group data by one or more columns in MariaDB?
a) GROUP BY
b) SORT BY
c) ORDER BY
d) ARRANGE BY
Answer: a) GROUP BY

Explanation: The GROUP BY keyword is used to group data by one or more columns in MariaDB. It is used with the SELECT statement and can be combined with aggregate functions like SUM() or COUNT().

Which function is used to find the maximum value in a column in MariaDB?
a) MAX()
b) MIN()
c) AVG()
d) COUNT()
Answer: a) MAX()

Explanation: The MAX() function is used to find the maximum value in a column in MariaDB. It can also be used with dates or strings to find the latest or alphabetically last value.

Which keyword is used to update data in a table in MariaDB?
a) MODIFY
b) UPDATE
c) SET
d) CHANGE
Answer: b) UPDATE

Explanation: The UPDATE keyword is used to update data in a table in MariaDB. It is used with the SET keyword to specify the new values and the WHERE keyword to specify the rows to update.

Which function is used to concatenate strings in MariaDB?
a) CONCAT()
b) JOIN()
c) MERGE()
d) ADD()
Answer: a) CONCAT()

Explanation: The CONCAT() function is used to concatenate strings in MariaDB. It takes two or more arguments and joins them together into a single string.

Which keyword is used to delete data from a table in MariaDB?
a) REMOVE
b) DELETE
c) DROP
d) ERASE
Answer: b) DELETE

Explanation: The DELETE keyword is used to delete data from a table in MariaDB. It is used with the WHERE keyword to specify the rows to delete.

Which function is used to calculate the average value in a column in MariaDB?
a) AVG()
b) SUM()
c) MAX()
d) MIN()
Answer: a) AVG()

Explanation: The AVG() function is used to calculate the average value in a column in MariaDB. It is used with a numeric column and returns a decimal value.

Which keyword is used to create an index in MariaDB?
a) ADD INDEX
b) CREATE INDEX
c) MAKE INDEX
d) INDEX TABLE
Answer: b) CREATE INDEX

Explanation: The CREATE INDEX keyword is used to create an index in MariaDB. An index is a data structure that improves the speed of data retrieval operations.

Which function is used to find the minimum value in a column in MariaDB?
a) MIN()
b) MAX()
c) AVG()
d) COUNT()
Answer: a) MIN()

Explanation: The MIN() function is used to find the minimum value in a column in MariaDB. It can also be used with dates or strings to find the earliest or alphabetically first value.

Which keyword is used to truncate all data in a table in MariaDB?
a) DELETE
b) TRUNCATE
c) DROP
d) CLEAR
Answer: b) TRUNCATE

Explanation: The TRUNCATE keyword is used to truncate all data in a table in MariaDB. It removes all rows from the table, but does not delete the table itself.

Which data type is used to store date and time values in MariaDB?
a) VARCHAR
b) INTEGER
c) TIMESTAMP
d) FLOAT
Answer: c) TIMESTAMP

Explanation: The TIMESTAMP data type is used to store date and time values in MariaDB. It can store values from ‘1970-01-01 00:00:01’ UTC to ‘2038-01-19 03:14:07’ UTC.

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