MySQL is an open-source relational database management system (RDBMS). It is one of the most widely used database systems and is known for its speed, reliability, and ease of use. MySQL allows users to store and retrieve data in a structured manner, using tables with rows and columns. It supports multiple programming languages and is compatible with a wide range of operating systems like Windows, Linux, and macOS. MySQL is often used for web applications and is used by companies like Facebook, Twitter, and YouTube.
