问题描述
我有6张桌子
-tblStudents_info(包括学生姓名,地址等等)
-tblStudent_Classes(包括学生班级和流程)
-tblStudent_Subjects(包括基于特定组合的学生子喷射。)
-tblStudent_Marks(包括各种科目的学生分数)
-tblExam_Name(包括examID,Exam_Name)
-tblExam_Period(包括PeriodID,Period_Name)
问题来自于如何将表格关联(tblStudent_Marks,tblExam_Name和tblExam_Period)在每个时期(3个时期)完成的考试
i have 6 tables
-tblStudents_info( includes students names,address..etc)
-tblStudent_Classes(includes students classes and streams)
-tblStudent_Subjects(includes students subjets based on a certain combination.)
-tblStudent_Marks(includes student marks in various subjects)
-tblExam_Name(includes examID,Exam_Name)
-tblExam_Period(inclues PeriodID,Period_Name)
problem comes in how do i relate the tables (tblStudent_Marks,tblExam_Name and tblExam_Period)in the case where there are 3 Exams done in each period(3 periods)
推荐答案
这篇关于表关系/设计问题的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!