What is Data Flow Diagram (DFD) - How to Draw DFD and How DFD Works

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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