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The Process of Systems Design
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activity alternatives application software approach backup basis batch processing capabilities central cessing chapter COBOL cohesion complete computer information systems computer processing coupling criteria data base data communication data elements data flow diagram data structure database design phase detailed design development life cycle devices disk distributed documentation environment established evaluation example existing factors functional decomposition hardware identified implement individual input and output installation interfaces involved job steps job stream logical manual master file master record methods microcomputers minicomputers modules needs on-line systems operations options organization overall performed physical problem procedures processing functions produced pseudocode represents requirements result routines SDLC sequence sequential shown in Figure single software design statements storage structure chart system design specification systems analysis systems development systems flowchart systems software tasks technical design techniques terminals testing tion transmission water billing system