Reference no: EM132307101

Given the following narrative for Bambino's Pizzeria,

a. create the logical DFD diagram

b. create the physical DFD diagram.

c. create the systems flowchart.

For its chain of fast food outlets, Bambino's Pizzeria has recently installed a system to speed up deliveries. In each of its stores, Bambino's has three or four PCs connected to incoming phone lines. When a customer calls in an order to have pizza delivered, an employee answers and Caller ID checks the phone number against a data store containing past phone orders. If the order is for a repeat customer, the system matches the number with the customer database and displays the customer record on the screen. (Customer records contain a variety of information, including whether the customer's dog bites.) For first-time customers, the employee verifies the caller's name and address, and creates a record in the customer database. The order taker then types in the customer's pizza order. The system prints out a three-part order on a printer located in the kitchen. The original is used by the cook to prepare the order. When the order is ready, the cook marks the other two copies completed and gives them to the delivery driver to serve as delivery receipts for the driver and customer, respectively. At the same time that the order is printed, the order taker's computer displays a city locator grid that is used to help dispatch the drivers. From a copy of the display, a dispatch slip-showing the customer's street and connecting roads-is printed for the driver. The final system output generated at this time is a record of the order, which is the source for the event data written to the order system. The data will be used later to tally sales, calculate the driver's pay, and generate other reports. (Note: For this problem, assume that these activities are beyond the order-taking system's context.)