What is DFD ?
DFD : Graphical representation of system data and transformation of process is knows as Data Flow Diagram(DFD).
To construct data flow diagram we are to use
- 1.Arrow, 2.Circle , 3.Open ended
box,4.Square
1.Arrow - The arrow defines as data in motion.
2.Circle - Circles
is used for a process that invents data
into information.
3.Open ended
box - It represent to store data or temporary repository of data.
4.Square - The square is used a source or ,originator or destination of systems data.
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