MySQL

MySQL powers a massive portion of the web, from WordPress to Facebook. Known for its simplicity, speed, and reliability, MySQL is the default database for LAMP stack applications and remains heavily used in e-commerce, content management, and SaaS platforms. MySQL 8.0+ brought significant improvements including window functions, CTEs, JSON support, and improved security. While PostgreSQL is often preferred for complex queries, MySQL's read performance and vast ecosystem keep it relevant.