Unit 8 Case Study: Perry's Pizza Palace (Case 8 in Information Systems Analysis) Perry's Pizza Palace is a family-owned business that operates on the Gulf Coast. The company already uses both financial and point-of-sale (POS) software, but has been unable to find a suitable system to manage its inventory and purchase orders. You are an independent consultant who has been hired to develop an inventory and order system for the company. Background Perry's Pizza Palace orders their products, like cheese, meats, bread, vegetables and many others, from local farmers. All pizza dough is homemade and hand tossed in the pizzeria itself. Products that cannot be purchased locally due to off-season produce or items like seasonings are bought from vendor grocery wholesalers. Perry's Pizza Palace offers a variety of pizzas, such as classic pepperoni and cheese, cheeseburger pizza, chicken barbecue pizza, and supreme. As of now, Perry's Pizza Palace uses a journal to record its purchases and orders. Any employee can add, edit, or strike out a journal entry. When new meats or vegetable products arrive, employees must record the type, total weight, and cost as a new journal entry. A spreadsheet is used to keep track of inventory totals. Wholesale and retail prices are manually calculated and entered into the POS software. Inventory is pulled out of stock on a first in, first out basis. As the business continues to grow, this system is becoming less viable. Some of the shortcomings include: Employees sometimes make clerical mistakes or forget to record transactions. When the inventory holds a particular type of seafood or produce that has been purchased at different times and costs, it is difficult to determine the correct cost bases and some older food is spoiling before getting sold because food preparers are taking out stock in the wrong order. Sales prices have to be manually calculated, a process that can take a lot of time to complete. You have completed the systems planning phase; the next step is to create an object-oriented model of the inventory and orders system. Examples of UML Diagrams:

Create a use case diagram for an inventory and order system. Create a class diagram for classes you would expect to find in Perry's Pizza Palace system. Create a sequence diagram for some aspects of the new system. Create a state transition diagram that describes a changing state in the system. In your opinion, out of the three diagrams, which one is the most efficient. In other words, which of these cases shows the most information in the easiest and most understandable way possible?