ch04 - Chapter 4 Systems Development Maintenance Activities...

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Chapter 4: Systems Development & Maintenance Activities
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PARTICIPANTS Systems professionals End users Stakeholders ACCOUNTANTS Internal External Limitations of involvement
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ACCOUNTANTS/AUDITORS Why are accountants/auditors involved? Experts in financial transaction processes Quality of AIS is determined in SDLC How are accountants involved? Users (e.g., user views and accounting techniques) Members of SDLC development team (e.g., Control Risk being minimized) Auditors (e.g., auditable systems)
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I.S. AQUISITION In-house development Purchase commercial systems
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TRENDS IN COMMERCIAL SOFTWARE Trends in commercial software Relatively low cost for general purpose software Industry-specific vendors Businesses too small to have in- house IS staff Downsizing & DDP
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Turnkey systems General accounting systems Typically in modules Special-purpose systems Example banking Office automation systems Purpose is to improve productivity Backbone systems ( ERP ) SAP, Peoplesoft, Baan, Movex Vendor-supported systems Hybrids TYPES OF COMMERCIAL SYSTEMS
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Advantages Implementation time Cost Reliability Disadvantages Independence Customization needs Maintenance COMMERCIAL SYSTEMS
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SYSTEMS DEVELOPMENT LIFE CYCLE (SDLC) New systems 1. Systems planning 2. Systems analysis 3. Conceptual systems design 4. System evaluation and selection 5. Detailed design 6. System programming and testing 7. System implementation 8. System maintenance SDLC -- Figure 4-1 [p.141]
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PURPOSE: To link individual systems projects to the strategic objectives of the firm. Link individual projects to strategic objectives of the firm - Figure 4-2 [p.142] Who does it? Steering committee CEO, CFO, CIO, senior mgmt., auditors, external parties Ethics and auditing standards limit when auditors can serve on this committee Long-range planning: 3-5 years Allocation of resources - broad SYSTEMS PLANNING– PHASE I
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SYSTEMS PLANNING- PHASE I Level 1 = Strategic systems planning Why? 1. A changing plan is better than no plan 2. Reduces crises in systems development 3. Provides authorization control for SDLC 4. It works! Level 2 = Project planning
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This note was uploaded on 04/04/2011 for the course ACCT 5230 taught by Professor Szendi during the Spring '10 term at Kean.

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ch04 - Chapter 4 Systems Development Maintenance Activities...

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