首页/ 题库 / [单选题]假设学生关系是S(S#,SNAME,SE的答案

假设学生关系是S(S#,SNAME,SEX,AGE),课程关系是C(C#,CNAME,TEACHER),学生选课关系是SC(S#,C#,GRADE)。那么,要查找选修"DB"课程的"女"学生姓名,将涉及到关系()

单选题
2022-05-09 09:18
A、S
B、SC和C
C、S和SC
D、S、SC和C
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正确答案
D

试题解析

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