能够实现学生基本信息的录入、修改、删除等操作，其中学生信息包括班号、学号、性别等；
（2）能够实现课程信息的录入、修改、删除等功能，其中课程信息包括课程号、课程名、学分等；
（3）能实现选课功能，每个学生有选修学分限制，超出可选学分限制会提示；
（4）能方便的对学生选课情况进行查询，可以根据学号、姓名、班级、课程名等多种方式查询；
（5）有汇总功能，能对每个学生的选修学分汇总，并对选修学分不足的学生进行筛选。(It can input, modify and delete students'basic information, including class number, student number, gender and so on.

(2) It can realize the functions of course information input, modification and deletion, including course number, course name, credit, etc.

(3) It can realize the function of elective courses. Each student has the credit limit for elective courses, which will be prompted if it exceeds the credit limit for elective courses.

(4) It is convenient to inquire about students'choosing courses. It can be inquired according to the number, name, class, course name and other ways.

(5) It has the function of summarizing the elective credits of each student and screening the students whose elective credits are insufficient.)