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What is Gane-Sarson DFD Symbols and Levels about?

1. Data Flow Diagrams (DFDs) are used to visually represent the flow of data in an information system. 2. DFDs have different levels that show increasing detail, with Level 0 being the overall context and Level 1 showing more specific processes. 3. The key symbols in a DFD are external entities, process bubbles, data flows, and file stores. An example DFD for a library book loan system is presented to demonstrate how the symbols are used.

Author

Maria Victoria Farrugia

Language

EN