: The pipelines (usually arrows) showing the path data takes between components. Hierarchical Levels of DFDs
: Sources or destinations outside the system boundaries. dfd.rar
: Decomposes processes further until the logic can be explained simply (e.g., through pseudo-code). File Specifics and Usage How to create a Level-0 Data Flow Diagram (DFD) : The pipelines (usually arrows) showing the path
A DFD represents the logical or physical flow of data from its source to its final destination. It focuses on the of the data movement rather than the how of technical implementation. Core Components : dfd.rar
: Actions that transform incoming data into outgoing information.
: Breaks down the context diagram into major subprocesses, revealing more of the system's internal workings.