试题与答案

假定学生关系是S(S#,SNAME,SEX,AGE),课程关系是C(C#,CNAME

题型:单项选择题

题目:

假定学生关系是S(S#,SNAME,SEX,AGE),课程关系是C(C#,CNAME, TEACH-ER),学生选课关系是SC(S#,C#,GRADE),要查找选修“COMPUTER”课程的女学生的姓名,将涉及到关系是( )。

A.S
B.SC、C
C.S、SC
D.S、C、SC

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D

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