Please use software (e.g. diagrams.net) to draw the DFD for your answer. Write your name, matrix number and section before you submit. If you use Diagrams.net, please refer to e-learning in Week 6 class instructions to properly draw your DFD.

Questions:

Sejahtera Corporation sells a line of electronic appliances. When the customers place orders on the companys website or through electronic data interchange, the system checks to see if the items are in stock, issues a status message to the customer, and then generates a shipping order to the warehouse, which fills the customers order. When the order is shipped, the customer is billed. The system also produces various reports.

1. List four elements used in DFDs, draw the symbols, and explain how they are used.

2. Draw a context diagram for the order system.

. Draw a diagram 0 DFD for the order system.

4. What are common features of logical DFD and physical DFD?

5. How the model progress from logical and physical DFD?

6. List the contents of physical DFD