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IT professionals who are creative thinkers, passionate, and skilled have a bunch of opportunities to explore. With these MySQL interview questions, an IT professional may get a job in the right field if he has enough knowledge of multi-tenant computer applications and database systems and if not knows how to obtain the expertise.
These MySQL interview questions and answers can change the trajectory of your thinking. MySQL is one of the popular IT skills used by organizations worldwide for their critical business apps. This is the only database system that is specially developed for the online world. So naturally, individuals with expertise over MySQL are in demand and if you are one of those individuals who are preparing for their next MySQL job interview and wondering what kind of MySQL interview questions are being asked these days then we’ve got great news for you!
In this blog, we will take you through a few of the MySQL interview questions which would help you in an interview and get the right opportunities in the database domain.
But first, let us take a quiz first to know how much you are familiar with the MySQL database platform, ready? Want to learn more about SQL Server Training & Certification, check this out!
Ans:- For this type of MySQL interview questions the answer is:
Ans:- For this type of MySQL interview questions and answers, the answer is:
MySQL is a multi-threaded or multi-user database management system having more than 11 million installations. It is the world’s second largest most popular and widely used open source database. Using MySQL is free of cost for developers, but enterprises have to buy the licensed version. It is supported by Oracle and based on Structured Query Language. It supports a wide range of operating systems like Windows, Linux, and Unix, etc.
SQL Server Training & Certification
Ans:- For this type of MySQL interview questions the answer is:
MySQL is written in C, and C++ language, and its SQL parser is written in YACC language.
MySQL is a client-server based application that includes:
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MySQL is a database server that is fast, reliable, and easy to use. It can be downloaded from the internet from a single click.
These are available in memory for high-speed storage temporarily. It does not allow BLOB or text fields; only comparison operators are allowed. Heap tables and indexes do not support an auto-increment function and should be NOT NULL.
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It is 3306.
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These are the reasons what makes MySQL better than Oracle:
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They are used to represent the power of two because of storage optimizations.
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Char-length is related to character count, whereas length keyword is related to the byte count.
ENUM is a string object that is used to specify a predefined set of values and can be used during the table creation.
It is a regular pattern that matches a given pattern in the search value.
They are different in storage and retrieval. CHAR column length is fixed to length while VARCHAR length value varies from 1 to 255.
What is the possible number of string types available for a column?
Read: SQL Operators You Need to Know
Here is the command to get the current MySQL version:
SELECT VERSION ();
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Here is the list of drivers available in the MySQL:
Q17). What are storage engines and how data is stored in storage engines?
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Storage engines are table types, and data is stored in the storage engine using various techniques given below:
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Each row in a table is identified uniquely by the primary key. There is only a primary key within a table. A primary key can be used as the candidate key and vice versa based on requirements.
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Here is the command for logging to a MySQL account when using a UNIX shell:
#[MySQL dir]/bin/MySQL – hostname –u -p
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It is used to compress the myISAM tables that reduce the memory or disk usage.
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There is no limit on the maximum size of a heap table, but it should be controlled by MySQL config variable named as:
Max_heap_table_size
Q22). How to differentiate the myISAM static and myISAM dynamic?
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For myISAM static, all the fields have fixed length while myISAM dynamic can accommodate variables of different lengths.
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It will stop incrementing and produce errors for further inserts.
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It gets the current timestamp whenever rows are altered.
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They allow access to tables located on other databases of the server.
WHERE keyword is used to filter rows, and it applies to each row, but HAVING keyword is used to filter groups.
WHERE can be used without the GROUP BY clause; however, HAVING cannot be used without the GROUP BY clause.
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In MySQL, the "i-am-a-dummy" flag renders the MySQL engine to reject the UPDATE and DELETE commands unless the WHERE clause exists.
Q28). What are some of the advantages of using MySQL?
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-Flexibility: MySQL functions on all
Power operating systems
MySQL focuses on performance
Caching of queries
Q29). What are MySQL Database Queries?
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A query is a specific question or inquiry. A database may be searched for specific information and a record may be returned.
Generally, slow query log is basically used in MySQL to determine which database queries will take a long time to execute.
A database is a structured set of data stored in a computer system and arranged in such a way as to be rapidly searched for. Database-based information that can be retrieved rapidly
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MySQL: MySQL data is stored in arrays (Row and Columns). MySQL is a database of structured queries.
MongoDB: MongoDB data is represented in the JSON document library. MongoDB is an object-oriented database.
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You can remove a column by using the DROP keyword:
ALTER TABLE classics DROP pages;
MySQLadmin -u root -p password "newpassword"
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Want to know more about SQL developer salary, check this out!
So whether you have an intermediate experience with MySQL or you are at an advanced level, these top MySQL interview questions and answers are selected after deep research so they are suitable for every candidate looking for a job in the database space.
Usually, every job interview discussion starts with the basics and moves to the advanced level, so we hope this list of MySQL interview questions has given you the required insight to ace your next MySQL interview. To give new heights to your career, add a certification to your resume by joining SQL certification program at JanBask Training.
Do you have any MySQL interview queries or doubt about its career path? Drop your MySQL interview queries or any other MySQL interview questions you have in the comment section and our experts will reach out with quick solutions!
Abhijeet Padhy is a content marketing professional at JanBask Training, an inbound web development and training platform that helps companies attract visitors, convert leads, and close customers. He has been honored with numerous accreditations for technical & creative writing. Also, popularly known as “Abhikavi” in the creative arena, his articles emphasize the balance between informative needs and SEO skills, but never at the expense of entertaining reading.
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Brian Taylor
I had my first MySQL interview this Friday. But I was worried about the final results. But thanks to your interview booklet, I cracked it in one go.
Louis Anderson
The interview question booklet is really helpful. I had gone through them numerous times before I reached my interview location. As it helped me revise everything in just one go. Thanks team!
Caden Thomas
What is the cost of a MySQL course at your institution and what's the process to pursue it?
Maximiliano Jackson
HI! Thanks for the question booklet, it really helped me clear my interview successfully. Hoping for more informational articles related to MySQL.
Holden White
Hi! What's the process to join your institution to pursue MySQL interview questions? Can anyone help!
Bryan Garcia
Hey! Nice guide. Do you have more posts at the same time? I am looking for some more questions.
Simon Martinez
Few questions are really explained very well. But few others are not. But never mind and yes one more thing i want to add, question selection is good.
Phoenix Robinson
Day after tomorrow, I have an interview. Luckily I got the post on time, after going through this blog I realized I am going to miss some very important questions but thanks to this guide I am done and feeling much confident for the interview.
Lane Clark
I personally felt, few answers need to be elaborative but the questions listed are good.
Josue Rodriguez
Covered almost all important and high weightez questions, this post will definitely help you in cracking your MySQL interview.