my final year project is to make a web application for a discussion forum for a university environment. i am about to submit my requirement specification document.
i guess the context diagram for this system will have three actors,
1- Students.....who post questions
2- Moderators/ Instructors...... who reply to posts
3- Administrators.......takes overall care
can someone please tell me the difference in privileges of a moderator and an administrator in such an environment, how do i show these two actors in my context diagram. my project supervisor is not satisfied with my system diagram as yet, need to improve.