In the project, I used the mysql database to make a background. I haven't used it before, and I've been configured while learning, and the process is recorded here, it is used. After downloading, DOS enters the bin directory login under the mysql installation directory: mysql -h172.18.2.87 -uroot -p display existing database name: show databases; use a database: use dbname; display has a table name: show name: Show TABLES; import external * .sql into the BBS database: D: / mysql / bin /> mysql -uroot -p bbs