This is whereby original diagram, is exploded into close-ups involving three to nine processes and showing data stores and new lower-level data flows.
The effect is that of taking a magnifying glass to view the original data flow diagram.
Each exploded diagram should use only a single sheet of paper.
By exploding DFDs into subprocesses, the systems analyst begins to fill in the details about data movement.
data flow diagram for civil supply services
There are many such systems of diagrams used to aid program design (e.g. data flow diagrams, entity relationship diagrams, control flow diagrams, flowcharts).
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Data Flow Diagram
Data and control flow diagrams
data flow diagrams of personal banking system
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i need data flow diagram for redbus.in
Design
difference between physical and logical data flow diagrams.
In data flow diagrams, the lines between "boxes" represent data that flows between components of a system. Because these only show the flow of data, they do not give an indication of sequencing.In activity diagrams, those lines are simply transitions between activities and do not represent data flow at all. They more represent the sequencing of activities and decisions. You can tell from these what order things happen in.
The purpose of a data flow diagram is to show you how the data flows through an information system. A sequence diagram shows you information regarding how the processes work together and in what order they operate.