MariaDB Interview Questions and Answers

Last updated on Feb 06, 2023
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MariaDB Interview Questions

MariaDB is the most popular database created by MySQL's original developers. It carries an intention to replace MYSQL as of concern of MYSQL acquisition by Oracle. MariaDB contains open source and relational database technology. As being a rational database, it provides you with the strength of storing data in various tables. Our extensive collection of MariaDB interview questions is guaranteed to help you get your dream job. Read on!


  • MariaDB incorporates a wide choice of storage engines, including high-performance storage engines, for working with different RDBMS information sources.
  • MariaDB utilizes a standard query language.
  • MariaDB keeps running on various operating systems with a wide range of programming language..
  • MariaDB supports PHP, that widely used for development.
  • MariaDB gives Galera cluster technology support that is a synchronous multi-master database.
  • MariaDB additionally offers numerous tasks and directions inaccessible in MySQL and dispenses with/replaces highlights affecting execution contrarily.

Looking for a new job? Do not miss to read our MariaDB interview questions and answers.

Most Frequently Asked MariaDB Interview Questions

Here in this article, we will be listing frequently asked MariaDB Interview Questions and Answers with the belief that they will be helpful for you to gain higher marks. Also, to let you know that this article has been written under the guidance of industry professionals and covered all the current competencies.

Q1. How to create a databse?

MariaDB needs to apply PHP mysql_query function to create a database.
Basic syntax − bool mysql_query( sql, connection );

Q2. What are the basic requirements to create or delete database into MariaDB?

We need privileges To create or delete any database in MariaDB to root users or admins. Under this process, you have two choices for making a database − the mysqladmin binary and a PHP script.

Q3. What are those two parameters that help to drop the database?

1)SQL : This required parameter comprises of the SQL query expected to play out the operation.
2)Connection : At the point when a parameter is not determined, this optional parameter calls the most recent connection.

Q4. How many kinds of data types it has?

There are three kinds of data type-

  • Numeric Data Types
  • Date and Time Data Types
  • String DataTypes
Q5. Why do we need to select the database and how?

Selecting a database is the necessary part as many databases exist there.
We have two options to select database first using a command prompt or through a PHP script.

Q6. How many queries are present in MariaDB?

There are six queries

  • Creating Table : In a table creation, determine its name, field names, and field definition.
  • Drop Table : In this process, we delete a table these deleted tables are irrecoverable.
  • Insert Table : Embeddings information into a table requires the INSERT query.
  • Select Table : Select query applies on selected rows to retrieve them. It also gives different alternatives to specify the table use.
  • Update Table : update query let you modify the existing data of the table by changing values.
  • Delete Table : The delete query erases table row from the predefined table and returns the erased quantity.
Q7. What is WHERE clauses also share qualities ?

WHERE clauses sieve various queries like SELECT, UPDATE, DELETE, and INSERT. They represent criteria used to determine activity. They are visible after a table name, and their condition follows. The WHERE clause equally crucial like statements.

Qualities of the WHERE clause –

  • It is an alternative.
  • It enables any condition to be specified.
  • It provides the specification of various conditions.
  • It's a Case sensitivity only applies to statements using LIKE comparisons.
Q8. What is LIKE clauses also share qualities ?

The LIKE clause includes a wide range of matching patterns, In this situation where it needs multiple results with shared characteristics. The patterns used for matches numbers of characters (0 or more) is percentile (%) and hyphen (-) as a single character.

Q9. What order by clause does?

It helps to sort the results of queries. It specifies the data in an operating order along with data sorting options in ascending (ASC) or descending (DESC) order. By default, it provides ascending order on the mission of order placements. ORDER BY clauses contains a wide range of statements such as DELETE and UPDATE. ORDER BY clauses works on final result of a table that is why they come at the end of a statement instead of in a subquery or earlier function set.

Q10. Give a brief detail about JOIN.
JOIN query merge two or more tables into a single one. It gathers data from various tables. This is a collection of following statements such as SELECT, UPDATE and DELETE. The old syntax of JOINS used to work on implicit joins without any keywords. Now it has the keyword to work best for readability, maintenance, and best practices. JOINs has a various form of the different type of aggregation depends upon their specifications such as such as a left join, right join, or inner join.
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