Exercise 4: DFD 1. Imagine that you were asked to create a POS system for Cesar's Pizza. 2. Write down the entities that interact with the POS system. 3. Now model this into a simple Context Diagram. 4. Write down the possible events that would happen with that system. 5. Write down the actions and processes that would need to be done to complete a sale transaction. 6. Now model this into a simple DFD 0. 7. Expand your DFD to add at least 3 different processes. A AUSTRALIAN INSTITUTE