Answer:
Data Flow Diagram
Step-by-step explanation:
Data flow diagram is representation of data which is processed in terms of input and output.It is a tool for designing the structure for a software.Rectangles,square and circles are used in representing the flow of information.
DFD consists two components
- Layers-It consist many layers,the top layer is called context diagram.
- Levels-The first level shows the main process of the system.