MySQL

MySQL is one of the most popular open-source relational database management systems (RDBMS) used to store, manage, and organize data. 

It uses Structured Query Language (SQL) to let users interact with the database – insert, update, delete information – through simple queries. This makes it easy to retrieve, update, and manage data.

MySQL is widely known for its speed, reliability, and flexibility. It’s the backbone of many web applications, especially for handling large amounts of data, and it works well with programming languages like PHP and Python. It’s compatible with large-scale platforms like WordPress, Joomla, and Magento.

The database is designed to handle complex data, and ensure data integrity through transactions, foreign keys, and indexing. It also supports features like replication, where data is copied across multiple databases.