uc35a6230a0000.txt

软件工程方面的书籍

This use case allows a student to register for courses in the current semester. The student can also modify or delete course selections if changes are made within the add/drop period at the beginning of the semester.  The Billing System is notified of all registration updates. The Course Catalog provides a list of all the course offerings for the current semester.  The main actor of this use case is the student.  The Course Catalog System is an actor within the use case.