Data-flow diagram - Wikipedia A data-flow diagram is a way of representing a flow of data through a process or a system (usually an information system) DFD also provides information about the outputs and inputs of each entity and the process itself. A data-flow diagram has no control flow — there are no decision rules and no loops. Specific operations based on the data can be represented by a Process Flow PowerPoint Templates - SlideModel Download Process Flow PowerPoint Templates to describe your processes with outstanding designs that will impress your audience. Ranging from different styles and shapes (linear, circular, spiral, geared, futuristic, etc.) our editable presentations allows the user to fully customize their process flow adding proprietary information and altering the flow as needed.