(Solved Homework): Creating Data Flow Diagrams A local restaurant is planning to implement an online ordering…

Creating Data Flow Diagrams
A local restaurant is planning to implement an online ordering system. The
first step in their project is to map out the order process and what
information needs to be input and output from an order.
Using an application of your choice (MS Word, Visio, Draw.io or any other
open source tool), create the DFD Level 0 or Context Diagram of a
restaurant ordering system.
After completing your context diagram, select one of the processes, then
identify the items which make up the four data flow diagram elements:
(1) Data sources and destinations
(2) Data flows
(3) Transformation processes
(4) Data stores

With the above information, complete a level 1 detailed diagram for the
selected process (use the previously selected software).

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Expert Answer

Answer

The Restaurant Online Food Ordering System Data Flow Diagram example contains three processes, four external entities and two data stores.

A Customer can place an Order. The Order Food process receives the Order, forwards it to the Kitchen, store it in the Order data store, and store the updated Inventory details in the Inventory data store. The process also deliver a Bill to the Customer.

Manager can receive Reports through the Generate Reports process, which takes Inventory details and Orders as input from the Inventory and Order data store respectively.

Manager can also initiate the Order Inventory process by providing Inventory order. The process forwards the Inventory order to the Supplier and stores the updated Inventory details in the Inventory data store.

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