下列SQL语句中,能够实现“将查询SC表的权限授予用户U1,并允许该用户将此权限授予其他用户”这一功能的是()
B.GRANT SELECT ON SC TO U1 WITH PUBLIC
C.GRANT SELECT TO SC ON U1 WITH GRANT OPTION
D.GRANT SELECT ON SC TO U1 WITH GRANT OPTION
B.GRANT SELECT ON SC TO U1 WITH PUBLIC
C.GRANT SELECT TO SC ON U1 WITH GRANT OPTION
D.GRANT SELECT ON SC TO U1 WITH GRANT OPTION
第1题
A、GRANT SELECT TO SC ON U1 WITH PUBLIC
B、GRANT SELECT ON SC TO U1 WITH GRANT OPTION
第2题
A、REVOKEUPDATE(XH)ONTABLEFROMZHAO
B、REVOKEUPDATE(XH)ONTABLEFROMPUBLIC
C、REVOKEUPDATE(XH)ONSTUDFROMZHAO
D、REVOKEUPDATE(XH)ONSTUDFROMPUBLIC
第3题
A.A.TO CURSOR
B.B.INTO CURSOR
C.C.INTO DBF
D.D.TO DBF
第6题
下列SQL语句中,实现唯一约束的是()。
A.学号char (8) NOT NULL CONSTRAINT un_no UNIQUE
B.学号char (8) NOT NULL PIE_学生表
C.性别char (2) NOT NULL check(性别=‘男’or性别=‘女’)
D.学号char (8) NOT NULL
第9题
A、学号char(8)NOTNULLCONSTRAINTun_noUNIQUE
B、学号char(8)NOTNULLCONSTRAINTPK_学生表PRIMARYKEY
C、性别char(2)NOTNULLcheck(性别=‘男’or性别=‘女’)
D、学号char(8)NOTNULL