A domain model class diagram, a use case diagram, SSDs for two use cases l, such as add a seller and record a book order use cases. A sequence diagram for each of the above is cases

that the book has been shipped. After the seller receives CASE STUDY MoveYourBooksNow.com notice that a listed book has been sold, the seller must notify Book Exchange the buyer via e-mail within 48 hours. Shipment of the order MoveYourBooksNow.com is a book exchange that does must be made within 24 hours of the seller sending the noti- business entirely on the Internet. The company acts as a fication e-mail. The seller sends a notification to the buyer clearinghouse for buyers and sellers of used books. and The MoveYourBooks.com when the shipment is made To offer books for sale, a person must register with After receiving notice of shipment. The MoveYour- MoveYourBooks. The person must provide a current physi- Books.com maintains the order in shipped status. At the cal address and telephone number as well as a current end of each month, a check is mailed to each seller for the e-mail address. The system maintains an open account for book orders that have been in shipped status for 30 days this person. Access to the system as a seller is through a The 30-day waiting period allows the buyer to notify The- secure, authenticated portal. MoveYourBooks.com if the shipment doesn't arrive for A seller can list books on the system through a special some reason or if the book isn't in the same condition as internet form. Information required includes all the perti- advertised. nent information about the book, its category, its general If they want, buyers can enter a service code for condition, and the asking price. A seller may list as many the seller. The service code is an indication of how well books as desired. The system maintains an index of all the seller is servicing book purchases. Some sellers are books in the system so buyers can use the search engine very active and use TheMove Your Books.com as a major to search for books. The search engine allows searches by outlet for selling books. Thus, a service code is an impor- title, author, category, and keyword. tant indicator to potential buyers. People who want to buy books come to the site and For this case, develop the following diagrams: search for the books they want. When they decide to buy they must open an account with a credit card to pay for the 1. A domain model class diagram books. The system maintains all this information on secure 2. A use case diagram servers 3. SSDs for two use cases, such as Add a seller and When a request to purchase is made and the payment Record a book order is sent, The MoveYourBooks.com sends an e-mail notice 4. A sequence diagram for each of the above use cases to the seller of the book. It also marks the book as sold. 5 An integrated design class diagram that includes The system maintains an open order until it receives notice classes, methods, and navigation attributes