TEST:TWO Read the story below and answer questions that follow: A Thandiwe Video Store (TVS) runs a series of fairly standard video stores. Before a video can be put on the shelf, it must be cataloged and entered into the video database. Every customer must have a valid TVS customer card in order to rent a video. Customers rent videos for three days at a time. Every time a customer rents a video, the system must ensure that he or she does not have any overdue videos. If so, the overdue videos must be returned and an overdue fee paid before customer can rent more videos. Likewise, if the customer has returned overdue videos but has not paid the overdue fee, the fee must be paid before new videos can be rented. Every morning, the store manager prints a report that lists overdue videos. If a video is two or more days overdue, the manager calls the customer to remind him or her to return the video. If a video is returned in damaged condition, the manager removes it from the video database and may sometimes charge the customer. QUESTIONS: 1. 2. 3. 4. Identify the main activities that are undertaken at TVS. Draw a use case diagram to represent the activities at Thandiwe's video store Draw a class diagram for the system at TVS Draw a Activity diagram for one of the use cases identified in the scenario above' Develop an sequence diagram for one of the use cases identified in the scenario above 5. 6. 7. Draw an object/ design class model for your solution in Q3. Define Polymophism. a. b. Give a good example of polymosphism and a bad 'use' of polymorphism using the TVS