Data Flow Diagram Components - Search
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    A Data Flow Diagram (DFD) is a graphical representation that illustrates the flow of data within a system. It shows how data enters, moves through, and exits the system, providing a clear understanding of the system's functionality and data processes.

    Key Components of DFD

    External Entity

    An External Entity, also known as a Terminator or Actor, represents sources or destinations of data outside the system. These can be organizations, groups of people, or departments that interact with the system but are not part of it. For example, customers or banks.

    Process

    A Process transforms input data into output data within the system. It is depicted using symbols like rectangles with rounded corners, ovals, rectangles, or circles. Processes are named using short sentences, single words, or phrases to convey their essence.

    Data Flow

    Data Flow describes the movement of information between different parts of the system. It is represented by arrows, with each arrow labeled to indicate the type of information being transferred. Data flows can be unidirectional or bidirectional.

    How to create a data flow diagram?
    Creating a DFD involves several steps that help to identify and understand the data flows in a system. To create a data flow diagram, the first step is to identify the processes within the system. These processes represent the activities or tasks that manipulate the data.
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    What is a Data Flow Diagram - Lucidchart
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