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Sequence Diagrams A university has self-serve terminals in the libraries for borrowers to check out books without help from library staff. Following is its use
Sequence Diagrams A university has self-serve terminals in the libraries for borrowers to check out books without help from library staff. Following is its use case description. Draw the corresponding sequence diagram with three parties: user, terminal and system. Supply parameter values for applicable messages in your sequence diagram. Use case name: BorrowBooks WithTerminal Actor: Student user Precondition: The user has a valid student card Flow of events: (main success scenario) 1. Terminal displays Insert student card. 2. User inserts a smart card issued to student or staff. 3. Terminal displays Place a book in the marked area or press Finish button. 4. User places a book in the marked area. 5. Terminal displays Place a book in the marked area or press Finish button. 6. If user has more books to check out, go to step 4. 7. User presses Finish button. 8. Terminal prints a receipt showing books borrowed and due date 9. Terminal ejects the user's card 10. Terminal displays Take student card and receipt Postconditions: 1. Statuses and due dates of borrowed books updated. 2. The user's list of borrowed books is updated. Quality requirement: 90% new users can borrow books with the terminal without assistance
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