Is MySQL case-sensitive?
MySQL does not care about the case. Its case sensitivity is determined by the underlying operating system, as the case sensitivity of table names and databases is determined by the OS. Database and table names are not case sensitive in Windows, but they are case sensitive in UNIX. The database accepts both upper and lower case table names, especially on UNIX hosts.
How do I write an optimized MySQL query?
This is one of the most searched MySQL query interview questions. Here are some guidelines for writing an optimized query in MySQL:
What is the difference between MyISAM and InnoDB?
These specific MySQL interview questions and answers for experienced candidates can be helpful. MyISAM and InnoDB are the most commonly used storage engines in MySQL.
The following are the distinctions between MyISAM and InnoDB:
What is the difference between truncate, delete and drop?
The difference is as listed below:
TRUNCATE
DELETE
DROP
What are the various methods for optimizing a MySQL query?
What is indexing?
A database index is a fact structure that enhances the speed with which operations in a table are performed. It can be built with one or more columns, laying the groundwork for both quick random lookup and efficient sorting of records access. Indexes help you rapidly find rows with certain column values.
What is cardinality?
This is one of the most searched MySQL query interview questions. The term cardinality in MySQL relates to the type of data values that can be stored in columns. It's a property that affects the ability to search, cluster, and sort data.
There are two types of cardinality, which are as follows:
What are DDL, DML, and DCL?
These specific MySQL interview questions and answers for experienced candidates can be helpful. DDL stands for Data Definition Language in MySQL, and it is used in database schemas and descriptions to determine how data should be stored in the database.
DDL Queries:
DML stands for Data Manipulation Language and is used to manipulate data in databases. It largely consists of standard SQL commands for storing, modifying, retrieving, deleting, and updating data.
DML Queries are:
DCL stands for Data Control Language and encompasses instructions that deal with user rights, permissions, and other database system controls.
List of queries for DCL:
Why do MySQL triggers exist?
When a certain change operation, such as a SQL INSERT, UPDATE, or DELETE query, is executed on a table, a trigger corresponds to a collection of activities that run automatically.
What is Sharding in SQL?
This is one of the most common MySQL query interview questions. Sharding is the technique of dividing huge tables into smaller portions (called shards) that are distributed across different servers. The benefit of sharding is that searches, maintenance, and all other operations are substantially faster because the sharded database is generally much smaller than the original.
A MySQL developer's interview procedure is not restricted to MySQL technical interview questions. As a candidate seeking a dream MySQL job, you must be prepared to answer MySQL interview questions as well as questions about your soft skills, such as communication, problem-solving, project management, crisis management, team management, and so on. It is your duty as a recruiter to identify a MySQL developer who fits your company's culture. As a result, apart from technical MySQL interview questions, you should also inquire about the candidates' team and social skills.
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