Assume that RMO will begin asking a random sample of customers who order by telephone about purchases made from competitors. RMO will give customers a 15 percent discount on their current order in exchange for answering a few questions. To store and use this information, RMO will expand the ERD and class diagram with two new entities (classes) and three new relationships. The new entities (classes) are Competitor and Product Category. Competitor has a one-to-many relationship with Product Category, and the existing Customer entity (class) also has a one-to-many relationship with Product Category. Competitor has a single field (attribute) called Name. Product Category has four fields (attributes): Description, Dollar Amount Purchased, Month Purchased, and Year Purchased. Revise the relational database schema shown in Figure to include the new entities and relationships. All tables must be in3NF.
Answer to relevant QuestionsAssume that RMO is developing its database using object-oriented methods. Assume further that the database designers want to make some changes to the class diagram in Figure (a). Specifically, they want to make Product Item ...Visit the Web site of an online catalog vendor similar to RMO (such as www.llbean.com) or an online vendor of computers and related merchandise (such as www.cdw.com). Browse the online catalog and note the various types of ...What are some examples of conceptual aspects of the user interface?Read through the following dialog, which shows a user trying to place an order with the system. Critique the dialog in terms of ease of learning and ease of use.User: I want to order a product.System: Okay. Enter your ...What does XML stand for? Explain how XML is similar to HTML. Also discuss the differences between XML and HTML.
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