Problem
Your goal in functional modeling is to depict what activities users perform and how the system reacts to those activities.
This type of model expresses the high-level functionality of the system from the users' perspective.
Case J: University Library Borrowing System
Try to creating a set of use cases for a university library borrowing system.
The system will record the books owned by the library and will record who has borrowed what books.
Before someone can borrow a book, he or she must show a valid ID card that is checked to ensure that it is still valid against the student database maintained by the registrar's office (for student borrowers), the faculty/staff database maintained by the personnel office (for faculty/staff borrowers), or against the library's own guest database (for individuals issued a "guest" card by the library).
The system must also check to ensure that the borrower does not have any overdue books or unpaid fines before he or she can borrow another book. Every Monday, the library prints and mails postcards to those people with overdue books.
If a book is overdue by more than 2 weeks, a fine will be imposed and a librarian will telephone the borrower to remind them to return the book(s).
Sometimes, books are lost or are returned in damaged condition. The manager must then remove them from the database and will sometimes impose a fine on the borrower.
Based on the case study provided:
Try to explain the functional requirements.
Try to create at least two use cases from the functional requirements.
Try to explain and justify the choices you made in your model.