dfd0 is a bigger scope in less detail than dfd1 which is much more detailed
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difference between physical and logical data flow diagrams.
1. Every state of DFA always has exactly one exiting transition arrow for each symbol in the alphabet. In NFA a state may have zero, one or many exiting arrow for each alphabet. 2. NFA can use empty string transition but DFA can not use it.
A Data Flow Diagram (DFD) visually represents the flow of data within a system, illustrating how inputs are transformed into outputs through various processes. It highlights the sources and destinations of data, as well as the interactions between different components, such as processes, data stores, and external entities. DFDs are useful for understanding system functionality and can aid in identifying potential improvements or issues within a process. They are commonly used in systems analysis and design.
For a physical Data Flow Diagram you explore into the logical DFD. for example, if you have a data flow arrow declared as "customer information" now the physical DFD would include in that data flow arrow "customer information = customer_name + customer_address". something along these lines Physical DFD shows how various functions are performed and who does them but Logical DFD strips away all physical constraints but does not restrict physical happenings from taking place.
That was a ferocious tiger which she killed with an single arrow.
the dfd which independent view of the system is called logical dfd
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I have dfd for airlines reservation system. my email id is: nabanita.dumdum@gmail.com
All of the DFD should be named .All the name should be meaningful to add value to the dfd,s.
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