A.统计职工的总人数
B.统计每一部门的职工人数
C.统计职工服务的部门数目
D.统计每一职工服务的部门数目

A.SELECT max(score) FROM grade
B.SELECT TOP 1 score FROM grade ORDERBY score ASC
C.SELECT st_id，MIN(score) FROM grade
D.SELECT TOP 1 score FROM grade ORDERBY score DESC

A.DROP FROM student
B.DELETE FROM student
C.REMOVE FROM student
D.KILL FROM student

A.UPDATE一次只能修改一列的值
B.UPDATE只能修改不能赋值
C.UPDATE可以指定要修改的列和想赋予的新值
D.UPDATE不能加WHERE条件

A.REPLACE AGE WITH AGE+1
B.UPDATE STUDENT AGE WITH AGE+1
C.UPDATE SET AGE WITH AGE+1
D.UPDATE STUDENT SET AGE=AGE+1

A.CHECK约束
B.唯一约束
C.默认约束
D.主键约束

A.Update account SET Sex=´女´where Sex=´男´
B.Update account SET Sex=´男´where Sex=´女´
C.Update FROM account SET Sex=´女´where Sex=´男´
D.Update FROM account SET Sex=´男´where Sex=´女´

A.一个
B.两个
C.三个
D.四个

A.数据完整性
B.数据有效性
C.数据安全性
D.以上都不是

A.action
B.go
C.for
D.up

A.DEFAULT约束
B.CHECK约束
C.PRIMARYKEY约束
D.FOREIGNKEY约束