DFD method is
an element of object oriented analysis and is widely used. It is the method of
choice over technical descriptions for three principal reasons such as “easier
to understand by technical and nontechnical audiences, it can provide a high
level system overview, complete with boundaries and connections to other
systems and it provide a detailed representation of system components”.
This data flow
diagram helps system designers and others during initial analysis stages
visualize a current system or one that may be necessary to meet new
requirements. Use of data flow diagrams are promotes quick and relatively easy
project code development
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