MySQL is a popular open-source relational database management system (RDBMS) that uses a client-server architecture. The architecture of MySQL can be divided into three main layers:
- Connection layer: The connection layer is responsible for handling client connections to the MySQL server. The clients can be applications or tools that communicate with the server over the network using the MySQL protocol. The connection layer provides authentication, authorization, and encryption services.
- Query processing layer: The query processing layer is responsible for receiving, parsing, optimizing, and executing SQL queries. The query processing layer includes the SQL parser, query optimizer, query executor, and storage engine interface.
- Storage engine layer: The storage engine layer is responsible for storing and retrieving data from disk or memory. MySQL supports multiple storage engines, each with its own strengths and weaknesses. The most commonly used storage engines are InnoDB, MyISAM, and Memory.
