Data Flow Diagrams Quiz

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<p>Before constructing a physical DFD (B)</p> Signup and view all the answers

<p>Better communication with users (C)</p> Signup and view all the answers

Focuses on illustrating how a business functions and operates, independent of technical implementation.

Illustrates how a system is implemented, including databases, hardware, and software components.

Analyze the existing system, then incorporate desired features, and finally design implementation methods.

Constructed to facilitate better communication and understanding of business processes with users before technical details known.

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Enhanced communication and understanding of business processes with non-technical users.

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The focus of a logical data flow diagram is on the system's functional requirements, illustrating the flow of data through the system without considering the physical implementation.

A physical data flow diagram shows the actual implementation of the system, including the physical components, flow of data, and the storage of data.

The ideal progression for developing systems using data flow diagrams is to first create a logical DFD, followed by a physical DFD.

A logical DFD should be constructed during the analysis phase, before the design phase, to identify the system's functional requirements and boundaries.

The advantages of using a logical model include the ability to identify functional requirements, identify system boundaries, and provide a clear understanding of the system's data flow without worrying about the physical implementation.