Data flow diagram for food ordering system
A data flow diagram is a graphical view of how data is processed in a system in terms of input and output.
The Data flow diagram (DFD) contains some symbol for drawing the data flow diagram.
Data flow diagram symbol
Context level DFD for Online food system
1st level DFD for User
2nd level DFD for user (3.0)
Admin side DFD for online food system