1、mariadbmysql
yum install mariadb mariadb-serversql
systemctl restart mariadb數據庫
systemctl enable mariadbide
mysql_secure_installation （初始化mysql）rest
MariaDB [(none)]> set password=password('redhat'); （數據庫登陸後，修改mariadb數據密碼）server
MariaDB [mysql]> create user dream@localhost identified 'redhat'; （建立dream用戶和密碼）blog
grant select,update,delete,insert on mysql.* to dream@localhost; （添加dream用戶elect,update,delete,insert權限）io
revoke select,update,delete,insert on mysql.* from dream@localhost; （刪除dream用戶elect,update,delete,insert權限）mariadb
create database rise; （建立rise數據庫）table
create table students(name char(15),age int,grade int); （建立students數據表）
desc students; （查看數據表字段）
插入記錄
insert into students values('zhangsan',18,80);
insert into students values('lisi',22,70);
insert into students values('wangwu',30,88);
select * from students; （查詢全部記錄）
update students set age=10 where name='zhangsan'; （修改張三age字段記錄）
mysqldump -u root -p rise > rise.dump （數據庫備份）
delete from students; （刪除rise數據庫中表記錄）
mysql -u root -p rise < rise.dump （數據庫還原）
delete from students where name='wangwu'; （單獨刪除王五記錄）