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Systems Analysis and Design in a Changing World, Fifth Edition

Systems Analysis and Design in a Changing World, Fifth Edition. Project Management Perspective. Nine areas to consider for decisions discussed in this chapter. Scope Time Cost Quality Human resources. Procurement Communications Risk Integration .

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Systems Analysis and Design in a Changing World, Fifth Edition

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  1. Systems Analysis and Design in a Changing World, Fifth Edition

  2. Systems Analysis and Design in a Changing World, 5th Edition Project Management Perspective • Nine areas to consider for decisions discussed in this chapter • Scope • Time • Cost • Quality • Human resources • Procurement • Communications • Risk • Integration

  3. Systems Analysis and Design in a Changing World, 5th Edition Deciding on Scope and Level of Automation • Scope determines which business functions will be included in system • Level of automation - how much computer support exists for these functions • Users typically request more business functions than budget allows

  4. Systems Analysis and Design in a Changing World, 5th Edition Determining the Level of Automation • Low level • Functions automated for simple computer record keeping • Medium level • Midrange point that combines features from low and high alternatives • High level • System automates most processing of business functions

  5. Systems Analysis and Design in a Changing World, 5th Edition RMO Customer Support System Figure 8-1 (Partial Figure)

  6. Systems Analysis and Design in a Changing World, 5th Edition Selecting Alternatives • Entire group of alternatives is evaluated together to provide “big picture” view of proposed system • Key criteria: • Strategic plan • Economic feasibility • Schedule and resource feasibility • Technological feasibility • Operational, organizational, and cultural feasibility

  7. Systems Analysis and Design in a Changing World, 5th Edition Defining the Application Deployment Environment • Configuration of • Computer hardware • System software • Networks • Development tools • Existing environment generally considered and compared with proposed environment

  8. Systems Analysis and Design in a Changing World, 5th Edition Range of Application Types • Stand-alone applications on desktops or laptops, small servers and PDA devices • Online interactive applications – wired & wireless • Distributed applications across multiple platforms • Internet-based applications

  9. Systems Analysis and Design in a Changing World, 5th Edition Deployment Environment Characteristics to Consider • Compatibility with system requirements • Compatibility among hardware and system software • Required interfaces to external systems • Conformity with IT strategic plan and architecture plans • Cost and schedule

  10. Systems Analysis and Design in a Changing World, 5th Edition Choosing Implementation Alternatives • Variations on obtaining system • Facilities management – outsource all IS support • Packaged software, turnkey system, ERP system • Custom-built software systems • In-house development • Selection dimensions • Buy vs. build • In-house vs. outsource

  11. Systems Analysis and Design in a Changing World, 5th Edition Implementation Alternatives Figure 8-6

  12. Systems Analysis and Design in a Changing World, 5th Edition Selecting an Implementation Alternative • Identifying criteria for selection • Comparisons can be difficult • Different proposed systems have strengths in different areas • Three major areas to consider • General requirements • Technical requirements • Functional requirements

  13. Systems Analysis and Design in a Changing World, 5th Edition Partial Matrix of General Requirements Figure 8-7

  14. Systems Analysis and Design in a Changing World, 5th Edition Contracting with Vendors • Generate request for proposal (RFP) / Request for Quote (RFQ) • Formal document sent to vendors if in-house development is not selected • States requirements and solicits proposed solutions • Considered a competitive contract offer • Bid on supplying hardware, software, and/or support services

  15. Systems Analysis and Design in a Changing World, 5th Edition Sample RFP/RFQ Table of Contents ‏ Figure 8-10

  16. Systems Analysis and Design in a Changing World, 5th Edition Benchmarking and Choosing a Vendor • Observe in use or install trial version • Benchmark – evaluate the system against a standard • Visit another company using a particular system • Develop a contract • Fixed-dollar – risk is on vendor • Cost-plus-percentage – risk is on purchaser • Cost-plus-fixed-fee – risk is shared by both

  17. Systems Analysis and Design in a Changing World, 5th Edition Presenting Results and Making Decisions • Compile and organize documentation • Present alternatives and critical issues in easy-to-understand but complete manner • Don’t use too many technical terms • Know your audience

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