MySQL is an open-source relational database management system that is widely used for storing and managing data. It is a popular choice for web applications, as it allows for efficient and secure storage of large amounts of data. MySQL uses a structured query language (SQL) to retrieve and manipulate data, making it easy to use for developers and non-technical users alike. It is known for its reliability, scalability, and speed, making it a top choice for businesses of all sizes. With its robust features and user-friendly interface, MySQL has become a cornerstone in the world of data management.