Ch08-Lec - Philadelphia University School of Business...

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B122FL07\Ch08-Lec.doc page 1 of 8 Philadelphia University School of Business Administration INFO-101 Information Systems Prof London Chap-08, Systems Development Principles and Learning Objectives Effective systems development requires a team effort of stakeholders, users, managers, systems development specialists, and various support personnel, and it starts with careful planning. Systems development often uses different approaches and tools such as traditional development, prototyping, rapid application development, end-user development, computer-aided software engineering, and object-oriented development to select, implement, and monitor projects. Systems development starts with investigation and analysis of existing systems. Designing new systems or modifying existing ones should always be aimed at helping an organization achieve its goals. The primary emphasis of systems implementation is to make sure that the right information is delivered to the right person in the right format at the right time. Maintenance and review add to the useful life of a system but can consume large amounts of resources. ? ? (?=Decision Point) I- Planning (Preliminary investigation) IVa - Dev IVa- Development (Acquisition ) II- Analysis IVb- Implementation III- Design V- Mainteenance (Audit & Evaluate) An Overview of Systems Development: Participants in Systems Development Development team Responsible for determining the objectives of and delivering a system that meets these objectives Consists of stakeholders, users, managers, systems development specialists, and support personnel Information Systems Planning and Aligning Corporate and IS Goals Pplanning : translating strategic and organizational goals into systems development initiatives Aligning goals and IS goals is critical for any successful systems development effort Determining whether organizational and IS goals are aligned can be difficult Importance of IS Planning Systems Development Life Cycle: The systems development process is also called a systems development life cycle (SDLC) Planning Phase I Analysis Phase II STOP Modify III IVa IVb V
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B122FL07\Ch08-Lec.doc page 2 of 8 The Traditional Systems Development Life Cycle Systems investigatio n: problems and opportunities are identified and considered in light of the goals of the business Systems analysis : study of existing systems and work processes to identify strengths, weaknesses, and opportunities for improvement Systems design : defines how the information system will do what it must do to obtain the problem’s solution Systems implementation : the creation or acquiring of various system components detailed in the systems design, assembling them, and placing the new or modified system into operation Systems maintenance and review: ensures that the system operates, and modifies the system so that it continues to meet changing business needs Prototyping Try something, test it & improve upon it. Try the improved method, test it improve, etc etc until a satisfactory result is finally accepted.
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This note was uploaded on 05/06/2010 for the course IMS 44212 taught by Professor Robert during the Spring '10 term at Clinton Community College.

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Ch08-Lec - Philadelphia University School of Business...

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