Physical diagrams show you the practical process of moving information through a system, like how your system’s specific software, hardware, files, employees, and customers influences its flow of information. Logical diagrams display the theoretical process of moving information through a system, like where the data comes from, where it goes, how it changes, and where it ends up. ![]() There are two types of DFDs - logical and physical. Visually displaying how a process or system works can hold people’s attention and explain complex concepts better than blocks of text can, so DFDs are able to help almost anyone grasp a system’s or process’ logic and functions. They range from simple overviews to complex, granular displays of a process or system.ĭFDs became popular in the 1970s and have maintained their widespread use by being easy to understand. DFDs help you better understand process or system operation to discover potential problems, improve efficiency, and develop better processes. A data flow diagram (DFD) is a visual representation of the information flow through a process or system.
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June 2023
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