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db_owher public db_datawriter sysadmin
db_owner public db_datawriter sysadmin
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hotmail.com@User1 User1@hotmail.com User1.hotmail@com User1.com@hotmail
db_owner public db_datawriter sysadmin
db_owner public db_datawriter sysadmin
A、stnet.cn@user1 B、User1@stnet.cn C、User1.stnet@cn D、User1.st@net.cn
255.255.240.0 255.255.248.0 255.255.250.0 255.255.255.0
GRANTUPDATE(GRADE), SELECTTO user1 ONTABLE SC; GRANT UPDATE(GRADE), SELECT ON TABLE SC TO user1; GRANT UPDATE TABLE SC ON(GRADE), SELECT TO user1; GRANTON TABLE SCUPDATE(GRADE), SELECT TO user1;
关闭User1账户，另外再打开一个账户 关闭User1账户，切换到系统管理员账户 关闭User1账户同时关闭计算机 删除User1账户
GRANT SELECT，UPDATE(grade)ON TABLE sc TO user1 GRANT SELECT sc，UPDATE sc，grade TO user1 GRANT SELECT，UPDATE ON TABLE sc．grade TO user1 GRANT SELECT ON TABLE sc，UPDATE ON TABLE sc(grade)TO user1
在/etc/group文件中，添加sales：44：user1，user2，user3 使用命令groupaddsales 使用命令groupadd-asalesuser1user2user3 在/etc/group文件中，添加sales：：44：user1，user2，user3
dh_owner public db_datawriter sysadmin
255.255.255.0 255.255.250.0 255.255.248.0 255.255.240.0
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