[Thesis Writing] how to write function description of jsp online examination system

(l) Users accessing the system are divided into two categories according to their identities : Administrator user ( Usually teachers )、 Candidate user ;
(2) Only system administrators are allowed to test candidates 、 Manage basic information such as topics ;
(3) The main functions of the examinee are online examination and checking the results ;
(4) Only authenticated users can enter the homepage of the corresponding user identity .
The above two types of users have their own operation functions . Divide the modules according to the operation , Each operation module should realize its own functions , And be responsible for connecting the preceding and the following in the whole operation process . According to the needs of these two aspects , To describe the functions to be realized by each module : Its functional modules are roughly divided into ：
1） Candidate information module
The candidate information is added and generated by the super user , It includes the functions of adding and deleting candidate information
2） Topic management module
It mainly includes the functions of adding and modifying examination questions
3） Score statistics module
It includes the display of the examination results of all candidates and the statistics of the number of candidates in each score segment
4） Administrator added
The main function is to add and delete background administrators
5） Online test module
The online examination of candidates mainly goes through three steps , First, candidates log in , Enter the exam after logging in successfully , Submit after answering all the questions , Show your grades . As shown in the figure ：

Describe the system framework diagram of this application ：