The advantage of a physical data flow diagram (DFD) versus a logical data flow diagram (DFD) is that we can concentrate on what activities a system is performing without having to specify how, where or by whom.

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A physical data flow diagram (DFD) focuses on how a system operates, including how, where, and by whom activities are performed, whereas a logical data flow diagram abstracts away such details to concentrate on what activities the system is performing without specifying the how, where, or by whom.

The Advantage of a Physical Data Flow Diagram (DFD) Versus