文件名称:JavaWebOnlineExam
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设计一个在线考试系统，由于该系统的考试是限定在同校师生范围内，所以应规定所有用户进入系统时，需进行身份验证。并且由于系统特殊性，应由数据库管理员录入可进入系统的人员信息，而不应允许任何人注册。
具体地，考生可在规定的时间内登录系统进行考试，由于是统考，同一次考试的学生试卷和作答时间应相同。学生也可在个人信息界面查看、修改个人基本信息，或查询自己某科的考试成绩。
老师则可在登录系统后，对试题进行增删改查等基本操作，也可在个人信息界面查看、修改个人基本信息，或查询所有学生的成绩信息。
成绩信息则由系统计算出该学生的成绩后，根据学生的唯一标记号和科目唯一标记号记录下学生的成绩并录入系统，以方便老师和学生查询。-Design of an online examination system, due to the system of examination is limited within the scope of the school teachers and students, so all users shall be fixed into the system, the need for authentication. And because the system peculiarity, should by the administrator can enter the system of personnel information of the input, and should not allow anyone to register.
Specifically, candidates can within the prescribed time login system for the exam, because it is a nationwide examination, students of the same test paper and answer time should be the same. Students can also be used in the interface view, modify personal basic information, personal information or check your test scores.
After the teacher can login system, to the question of the basic operations such as add and delete, can also be used in the interface view, modify personal basic information, personal information or queries all student performance information.
Performance information is calculated by the system
具体地，考生可在规定的时间内登录系统进行考试，由于是统考，同一次考试的学生试卷和作答时间应相同。学生也可在个人信息界面查看、修改个人基本信息，或查询自己某科的考试成绩。
老师则可在登录系统后，对试题进行增删改查等基本操作，也可在个人信息界面查看、修改个人基本信息，或查询所有学生的成绩信息。
成绩信息则由系统计算出该学生的成绩后，根据学生的唯一标记号和科目唯一标记号记录下学生的成绩并录入系统，以方便老师和学生查询。-Design of an online examination system, due to the system of examination is limited within the scope of the school teachers and students, so all users shall be fixed into the system, the need for authentication. And because the system peculiarity, should by the administrator can enter the system of personnel information of the input, and should not allow anyone to register.
Specifically, candidates can within the prescribed time login system for the exam, because it is a nationwide examination, students of the same test paper and answer time should be the same. Students can also be used in the interface view, modify personal basic information, personal information or check your test scores.
After the teacher can login system, to the question of the basic operations such as add and delete, can also be used in the interface view, modify personal basic information, personal information or queries all student performance information.
Performance information is calculated by the system
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