MySQL is a widely-used open-source relational database management system (RDBMS) that organizes data into structured tables. It supports SQL (Structured Query Language), enabling efficient data management and retrieval. MySQL is known for its speed, reliability, and ease of use, making it a popular choice for web applications, data warehousing, and logging. It supports various storage engines, allowing for flexibility in data handling. With robust security features and compatibility with numerous platforms, MySQL is suitable for both small-scale applications and large enterprises. It offers features like transactions, replication, and clustering, ensuring data integrity and high availability.