授权编译系统和合法性检查机制一起组成了()子系统。
A.安全性
B.完整性
C.并发控制
D.恢复
- · 有5位网友选择 D,占比55.56%
- · 有2位网友选择 B,占比22.22%
- · 有1位网友选择 C,占比11.11%
- · 有1位网友选择 A,占比11.11%
A.安全性
B.完整性
C.并发控制
D.恢复
A、SELECT SN,AGE,SEX FROM S WHERE AGE>(SELECT AGE FROM S WHERE SN="王华")
B、SELECT SN,AGE,SEX FROM S WHERE SN="王华"
C、SELECT SN,AGE,SEX FROM S WHERE AGE>(SELECT AGE WHERE SN="王华")
D、SELECT SN,AGE,SEX FROM S WHERE AGE > 王华.AGE
A、SELECT S# FROM SC WHERE C#="C2" AND GRADE >= (SELECT GRADE FROM SC WHERE C#="C2")
B、SELECT S# FROM SC WHERE C#="C2" AND GRADE IN (SELECT GRADE FROM SC WHERE C#="C2")
C、SELECT S# FROM SC WHERE C#="C2" AND GRADE NOT IN (SELECT GRADE FROM SC WHERE C#="C2")
D、SELECT S# FROM SC WHERE C#="C2" AND GRADE >= ALL (SELECT GRADE FROM SC WHERE C#="C2")
A、SELECT S.SN,SC.C#,SC.GRADE FROM S WHERE S.S#=SC.S#
B、SELECT S.SN,SC.C#,SC.GRADE FROM SC WHERE S.S#=SC.GRADE
C、SELECT S.SN,SC.C#,SC.GRADE FROM S,SC WHERE S.S#=SC.S#
D、SELECT S.SN,SC.C#,SC.GRADE FROM S.SC
A、SELECT S#,SUM(GRADE) FROM SC WHERE GRADE>=60 GROUP BY S# ORDER BY 2 DESC HAVING COUNT(*)>=4
B、SELECT S#,SUM(GRADE) FROM SC WHERE GRADE>=60 GROUP BY S# HAVING COUNT(*)>=4 ORDER BY 2 DESC
C、SELECT S#,SUM(GRADE) FROM SC WHERE GRADE>=60 HAVING COUNT(*)>=4 GROUP BY S# ORDER BY 2 DESC
D、SELECT S#,SUM(GRADE) FROM SC WHERE GRADE>=60 ORDER BY 2 DESC GROUP BY S# HAVING COUNT(*)>=4
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