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Unformatted text preview: Accounting Information Systems Introduction to AIS: Chapter 7: Systems Analysis and Design LEARNING OBJECTIVES generally describe what causes the motivation for systems development describe the nature of the systems life cycle o Creation systems development life cycle (SDLC) o Startup implementation, error correction o Maturity stable system, routine maintenance o Decline dissatisfaction and changed requirements describe the systems development life cycle systems development life cycle (SDLC) o Systems Analysis - o Systems Design (develop a model of the proposed system) Logical Data Modeling structured model techniques; representation of data items of relevance- ER ( entity-relationship ): entities and relationships between them.- EER ( extended-ER ): also shows attributes, primary key (if applicable), cardinality, and optionality- Also, REA discussed in Chapter 8 Logical Process Modeling procedures that modify data items Data Flow Diagram (DFD): logical flow of data -discussed in chapter 8 o...
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- Fall '09