How And Why Data Flow Diagrams Are Used
A data flow diagram (DFD) is a graphical representation of the ebb and flow of data that are part of a particular system. This helps in the quick visualization of the various stages of data processing and thus makes the identification of the changes that take place on data as it moves from input to output in a system much more easier to understand. There are different forms of DFD that exist. These forms are also known as graphical flow diagrams or in some cases process diagrams. The various descriptions and uses of these diagrams may be used as you wish but in actual fact there are differences between all these terms. These differences are usually small but can be noted and brought into account quite easily when the person creating the diagram makes use of text or graphics in order to lay out the process or procedure that occurs.
