MySQL Interview Questions with Answers: A Beginner’s Guide
MySQL is one of the most widely used relational database management systems (RDBMS) for web applications and data storage. If you are preparing for a MySQL interview as a fresher or beginner, understanding the basics is essential.
Here are some commonly asked MySQL interview questions with answers:
-
What is MySQL?
MySQL is an open-source relational database management system that uses SQL (Structured Query Language) to manage and manipulate data. -
What are primary keys and foreign keys?
A primary key uniquely identifies each record in a table, while a foreign key creates a link between two tables, ensuring referential integrity. -
What is a JOIN in MySQL?
JOINs are used to combine records from two or more tables based on related columns. Common types include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL OUTER JOIN. -
What are indexes in MySQL?
Indexes improve query performance by allowing faster data retrieval, but they may slow down data modification operations. -
What is normalization?
Normalization organizes data to reduce redundancy and improve database efficiency.
Preparing these questions will help beginners confidently tackle MySQL interviews and demonstrate a strong foundation in database concepts.
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