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MySQL is a relational database management system developed by MySQL AB, a Swedish company and a product of Oracle. MySQL is one of the most popular Relational Database Management systems, and one of the best RDBMS (Relational Database Management System) applications in WEB applications. MySQL is a relational database management system. Relational databases keep data in different tables, rather than putting all data in a large warehouse, which increases speed and flexibility. The SQL language used by MySQL is the most commonly used standardized language for accessing databases. MySQL software adopts the double licensing policy, which is divided into community edition and commercial edition. Due to its small size, fast speed and low total cost of ownership, especially the characteristics of open source, MySQL is generally selected as the website database for the development of small and medium-sized websites.