Development environment: Database: MariaDB (MariaDB database management system is a branch of MySQL, mainly maintained by the open source community. The purpose of using GPL licensing MariaDB is to be fully compatible with MySQL, including API and command line, so that it can easily become a replacement for MySQL In terms of storage engine, XtraDB (English: XtraDB) is used to replace MySQL's InnoDB by Michael Widenius, the founder of MySQL. Widenius) led the development. He had earlier sold the company he founded, MySQL AB, to SUN for US$1 billion. After that, as SUN was acquired by Oracle, the ownership of MySQL also fell into the hands of Oracle. The name MariaDB comes from. Michael The name of Widenius’s daughter Maria. I am personally very optimistic about the development of MariaDB, and many large companies have a strong demand for MariaDB out of consideration of the closed-source risks of some open source databases. MariaDB is undoubtedly a dark horse and a strong one. Sweeping the DB-Engines list, currently ranked 14th) Tool: eclipse JDK:1.8 Server: Tomocat8.5 System interface screenshot: