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Difference between Flowchart and Data Flow Diagram (DFD)

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FlowChart and Data Flow Diagrams both are ways of representing data or information. FlowChart is a visual representation and DFD is a graphical representation. In this article, we will discuss Flowchart and Data Flow Diagram and we will also look into the differences between them. Let’s proceed with the flowchart first.

What is a FlowChart?

A Flowchart is a diagrammatic representation of an algorithm. Sometimes programmers use it as a program planning tool to solve a problem. It makes use of symbols that are connected among them to indicate the flow of information and processing. It is a convenient technique to represent a program’s control flow.

Flow Chart

Flow Chart

For more, refer to FlowChart.

What is a Data Flow Diagram?

Data refers to information, flow refers to movement, and a diagram refers to a picture to represent something. So, DFD is the graphical representation of the flow of data or information. It is a framework or pattern of the data systems. It includes storing data, data input, and data output. It is described as the process of taking the data as input, storing it, and giving it as output. It describes the path of data that completes the process.

DFD (Data Flow Diagram)

DFD

For more, refer to Data Flow Diagram.

Difference Between Flowchart and Data Flow Diagram

Flow Chart Data Flow Diagram (DFD)
The main objective is to represent the flow of control in the program. The main objective is to represent the processes and data flow between them.
It has only a single type of arrow is used to show the control flow in the flow chart. It defines the flow and process of data input, data output, and storing data.
It is the view of the system at a lower level. It is the view of the system at a high level.
Three symbols represent a Flowchart. Five symbols represent a DFD
It deals with the physical aspect of the action. It deals with the logical aspect of the action.
It shows how to make the system function. It defines the functionality of the system.
It is not very suitable for a complex system. It is used for complex systems.

Flowchart types are  System flowchart, Data flowchart,

Document flowchart, and Program flowchart.

DFD types are Logical DFD and Physical DFD.

Frequently Asked Questions

1. In what cases, DFD is mostly used?

Answer:

DFDs are mostly used when we want to emphasize the processing of data and how data is exchanged between different components of system.

2. Which one is better in case of process optimization?

Answer:

Flowcharts are better in case of process optimization as it is used in detailed analysis of each step.

3. Can we use both FlowChart and DFDs together?

Answer:

Yes, DFDs and FlowCharts can be used together. We can use flowchart for depicting the process and DFDs for delving into the data interactions within that specific part of the process.


Last Updated : 31 Aug, 2023
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