單項(xiàng)選擇題下列哪個(gè)是MySQL自帶的備份工具()

A.mysqldump
B.source
C.grant
D.revoke


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2.單項(xiàng)選擇題下列哪個(gè)操作是創(chuàng)建一個(gè)可以遠(yuǎn)程登錄Mysql用戶的()

A.create user zhangsan@’localhost’;
B.create user zhangsan@’%’;
C.drop user zhangsan@’localhost’;
D.drop user zhangsan@’%’;

5.單項(xiàng)選擇題使用mysql的root用戶給本地用戶jack設(shè)置一個(gè)密碼,操作正確的是()

A.set password for jack@localhost = password('123');
B.set password password('123') for jack@localhost;
C.set password 123 for jack@localhost;
D.set password('123') for jack@localhost