Question

Draw a activity diagram for Use Case: Check Out Books Primary Actor: Worker Stakeholders and Interests: Worker: wants fast, and easy check out to books. Patron: wants fast checkout, and does not want to be charged for books they did not checkout. Library: wants fast checkout of books, and wants to make sure that all books that leave the library have been checked out. Wants to allocate books fairly. Government: wants to protect investment in books and keep costs down. Wants to promote learning and citizen happiness. Preconditions: The Worker has been authenticated. Success Guarantee (Post conditions): The System remembers that the Patron has checked out the books. Main Success Scenario (or Basic Flow): The Worker tells the System the identity of a patron who wishes to check out books. The System confirms that the patron is all owed to check out books, and remembers the patron's identity. TheWorkertellsthesystemtheidentityofabookthispatronischeckingout. The System confirms that he book can circulate, calculates the due date based on whether the patron is a faculty member or a student, and records that the patron has checked out this book, which is due on the calculated due date, and makes that information available from the library catalog. The System tells the Worker the due date (which also confirms that the book has been checked out). The Worker repeats steps 3-5 until indicates done. Extensions (or Alternative Flows): 2a. If the patron is not allowed to check out books because they have violated some library policy (for example, if the patron has not paid their university bill or library fines): The System tells the Worker that the patron is not allowed to check out books and the reason for this prohibition. The use case ends. 4a. If the book that is being checked out is non-circulating: The System tells the Worker why the book is non-circulating. The use case continues from step 3 in the main success scenario. Special Requirements There are different due dates depending on the kind of patron one is dealing with. For example, faculty can take out books for the whole academic year, whereas students can only take them out for a limited time. - The System must respond to the Worker, at least giving some progress indication, within 3 seconds, 95% of the time. Workers are experts, because they use the system continuously, so the interface should have minimal interaction and should minimize the physical effort involved; for example, workers should not have to be prompted. Displays for the worker should be visible from one meter away. The system should be quiet.

Answer 1