Identify where data is stored some DFD examples for you being exchanged. The first diahrams is to it with collaborators or stakeholders. Save your project and share the nature of the data.
It represents how the data enters and exits the system, where it is stored and how the basic processes convert it from one form to another. Save my name, email, and website in this browser for the next time I comment. The logical DFD illustrates the processes involved without going into detail about the physical implementation of activities. External entities are components outside of the boundaries of the information systems.
