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MySQL

MySQL is a widely used open-source relational database.

What Is MySQL​

MySQL stores structured data in tables and uses SQL for queries.

It is common in web hosting, content management systems, ecommerce platforms, and traditional backend applications.

How To Use MySQL​

Install MySQL locally or use a managed database. Create schemas and tables, then query them with SQL.

Applications connect through language-specific drivers or ORMs.

Basic Example​

CREATE TABLE products (
  id int AUTO_INCREMENT PRIMARY KEY,
  name varchar(255) NOT NULL,
  price decimal(10, 2) NOT NULL
);

INSERT INTO products (name, price)
VALUES ('Notebook', 9.99);

SELECT * FROM products;

Common Concepts​

  • Schemas organize database objects.
  • Tables store structured records.
  • Indexes improve query speed.
  • Foreign keys connect related tables.

What To Learn Next​

Learn joins, indexes, normalization, transactions, migrations, replication, and backup strategies.