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Define Data Flow Diagram.
A Data flow diagram is a graphical representation that depicts information flow & the transforms that are applied as data move from input to output.
The fundamental form of a data flow diagram, also known as a bubble chart or a data flow graph.
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Problem : (a) What does a UseCase Diagram represent? (b) Draw a UseCase Diagram for the above case study. (c) For any one use case give a detail use case specification.
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