題組內容
三、學生修課資料庫,其綱要(Schema)如下:COURSE為課程表、TEACHER為教師表、 STUDENT為學生表、TAKE_COURSE為修課表,有底線之欄位為主鍵;COURSE(CourseID, Cname, Ccredit),TEACHER(TeacherID, Tname, Toffice),STUDENT(StudentID, Sname, Sclass), TAKE_COURSE(CourseID, TeacherID, StudentID, Score, ClassRoom)。請用SQL回答下列問題: