Developing and Implementing Information Systems

Developing and Implementing

Information Systems

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Learning Objectives

Describe the system approach to problem
solving

Describe and Explain the steps of the
systems development life cycle

Explain the need for successful project
management

Compare different development
approaches organizations can apply

The System Approach

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Systems development is needed when:

Potential competition and developments in technology
lead to the development of new systems to carry out an
existing function

Existing systems are modified to carry out additional
functions

Comply with regulations

A system has ran through its full life cycle;

3 Phases: Development (e.g., SDLC), Effective operational use,
and Decline in usefulness

Development

Effective Operational Use

Decline

Percent of
Effectiveness

(McKeown 2000,p.221)

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The Systems Approach: “seeing the forest
AND the trees”

Seeing “interrelationships” among “systems” rather than
linear cause-and-effect chains when events occur

Seeing “processes” of change among “systems” rather than
discrete “snapshots” of change, whenever change occurs.

An example of system thinking: the sales processes

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