What is Data Flow Diagram (DFD) - How to Draw DFD and How DFD Works | Virtual Study Solutions
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What is Data Flow Diagram (DFD)


A data-flow diagram (DFD) is a way of representing a flow of data of a process or a system (usually an information system).

Dear Students, In this tutorial we will discuss;
  • How to Draw Data Flow Diagram DFD 
  • How to Draw Data Flow Diagram DFD 
  • What is data flow diagram Building Blocks Of DFD 
  • DFD rules 
  • How DFD works

Data Flow Diagram (DFD) Rules

  • Each process should have at least one input and output. 
  • Each data store should have at least one data flow in and one data flow out. 
  • Data stored in a system must go through a process. 
  • All processes in a DFD go to another process or a data store.
Also Learn: How to Make Use Case Diagram using Microsoft Visio - UML Use Case Diagram Tutorial

How to Draw DFD and How DFD Works - Tutorial


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20 Dec 2019
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- December 20, 2019

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