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Lecture note Business system development - Lecture 10: Determining system requirements
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After studying this chapter you will be able to: Understand logical process modeling via data flow diagrams (DFDs); draw DFDs of well-structured process models; decompose DFDs into lower-level diagrams; balance high-level and low-level DFDs; explain differences between current physical, current logical, new physical, and new logical DFDs. use DFDs for analyzing information systems. explain use cases and use case diagrams. |