MySQL is an open-source relational database management system that is commonly used with WordPress. In WordPress, MySQL is used to store and manage all of the content and data for your website, including posts, pages, comments, user data, and more.
When you install WordPress, it automatically creates a MySQL database for your site and connects to it using a configuration file. WordPress uses SQL queries to retrieve, add, update, and delete data from the MySQL database, allowing you to easily manage and organize your site’s content.
MySQL is a powerful and flexible database system that can handle large amounts of data and is optimized for speed and efficiency. It also supports advanced features such as indexing, transactions, and stored procedures, which can help improve the performance and security of your WordPress site.