The following is a list of all of the necessary requirements for the system:

All:

Login, logout

Search for courses $($all or based on some parameter$)$

Student:

Add$/$remove course from semester schedule $($based on course ID number$)$

Check conflicts in course schedule

Print individual schedule

Instructor:

Print course teaching schedule

Print$/$search course roster$($s$)$

Admin:

Add courses to the system

Remove courses from the system

Add instructor$/$students

Link $($or unlink$)$ instructor$/$student to course

Create sequence diagrams for the following functions:

Log$-$in$,$ log$-$out $($all users$)$

Search all courses $($all users$)$

Search courses based on parameters $($all users$)$