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What is Data Flow Diagram Components Explained about?
The document discusses the components and types of data flow diagrams (DFDs) used in systems analysis and design, including external entities, processes, data stores, and data flows. It also covers the steps involved in producing a level DFD of the current physical system, including identifying major data flows and sources/recipients, processes, and data stores. Additionally, it describes entity life history analysis (ELH) which provides a cross-check between the logical data structure and DFDs by diagrammi
- Author
- gauravgd16
- Language
- EN