The customer uses their computer to go to the Find Your Food website and enter their postcode. Based on the postcode entered, the Find Your Food web serve searches the restaurant master file and returns a list of restaurants within a 1 Okm radius, along with the store opening hours. The customer then selects a restaurant by clicking on its hyperlinked name, with the Find Your Food web service then retrieving a list of the menu items available from the menu date file. If the customer wishes, they are able to click on a particular food item for a picture of the meal as well as details of ingredients, although the web usage date indicates only 10% of customers use this feature. The customer then enters the quantities for the food items that they wish to order and the website calculates the order total. 

If the order details on the screen meet the customer's requirements, the customer clinks on the "My order is correct" button and is required to login using their account name and password (a new customer can create an account). Account login details are verified against the customer master data. Account details are used for delivery address details and customer contact regarding orders, as well as for marketing by Find Your Food. The customer details are held by the Find Your Food web server, which is located in their Neutral Bay office. Once the customer is logged in, the full details of the order, the amount, and delivery details are shown on the screen. The customer reviews these details and if they are correct they enter their payment details and click on the "Accept order" button — customers have to pay by credit card. Once the credit card has been approved the order is electronically sent to the chosen restaurant and saved in the orders received file. When the order is received by a restaurant's computer it is automatically printed and forwarded to the kitchen for preparation of the meal. When the food is ready, the printed order and the food are gathered by the driver and delivered to the customer. The customer is required to sign the order and return it to the driver, who checks that the form has been signed and then returns to the store and files the signed order in the orders dispatched files.
Required: 

For the process described above
a. Prepare the structured narrative
b. Prepare a physic DFD
c. Prepare a logic DFD
d. Prepare a system flow chart