Introduction to Systems Analysis and Design
A second edition expanding on principles and updating developments in design methodologies. A text for beginners which assumes a working knowledge of computers. Each chapter is followed by discussion questions and problems to illustrate the techniques described. The author is Head of the School of Computing Sciences at UTS.
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Typical information systems
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alternative attributes BUDGET calling module components computer system converted costs data element data flow diagram data store database design DBMS decision support systems decision tables defined dependent entity set documentation E-R diagram E-R model ensure ENTITY-RELATIONSHIP MODEL entry example existing system external entities feasibility functional dependency George Computing goal identified input interview inventory inventory control system invoice INVOICE-NO ITEM-NO linear cycle logical model logical record structure methodologies methods needed normal form objectives ORDER-DATE ORDER-NO organization output PART-NO payment person PERSON-ID phase physical PO-NO problem-solving problems process description produced project dictionary project management project request PROJECT-ID PROJECT-NO Projl purchase order record type relation key relational model relationship set requirements second normal form shown in Figure shows solution SSADM START-DATE structure chart structured systems analysis subset subsystem suppliers tasks techniques third normal form top-level DFD transaction user procedure usually walkthrough