Advatanges of Data flow diagram

There are number of advantages of  using a data flow diagram,

• It gives further understanding of the interrelatedness of the system and sub-systems
• Extremely useful in systems analysis as they help structure the steps in object-oriented design and analysis
• Makes it possible to understand what data are needed to provide appropriate inputs to any processing step
• It is useful from communicating current system knowledge to the user
• Used as part of the system documentation files
• Data flow diagram helps to substantiate the logic underlining the dataflow of the organization
• Provide key insight into how information is transformed as it passes through a system.
• It gives the summary of the system
• Very easy to follow errors and it is also useful for quick reference to the development team for locating and controlling errors
• Represents data flows
• Gives the summary of the system
• Represents an information system from the viewpoint of data movements, which includes the inputs and outputs to which people can readily relate.
• the ability to represent the system at different levels of details gives added advantage
• Helps to define the boundaries of the system.
• To provides good system documentation
• Very easy to follow errors and it is also useful for quick reference to the development team for locating and controlling errors
• Gives an intuitive look on the system’s operation
• Shows data and operations in the same diagram
• Not separated to static and dynamic analysis
• Shows data dependency ( what data is required to perform an operation)
• Promotes quick and relatively easy project code development.
• Easy to learn with their few and simple-to-understand symbols.
• The syntax used for designing DFDs is simple, employing English nouns or noun adjective-verb constructs.