MySQL is an open-source relational database management system (RDBMS) that is used to store and manage data. It is one of the most popular RDBMSs in the world and is used by businesses of all sizes to power their websites, applications, and other data-driven systems.
MySQL is known for its speed, scalability, and reliability. It is also relatively easy to learn and use, making it a popular choice for both beginners and experienced developers.