Phases, Steps, Purposes and Tasks
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Phases, Steps, Purposes and Tasks

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Figure 1.1 presents the systems development life cycle. The right side of the figure depicts the four development phases: systems analysis, systems design, systems implementation, and systems operation. The bubbles in Figure 6.1 identify the seven development steps undertaken to complete the four phases of development. Arrows flowing into each bubble represent the inputs needed to perform that step, whereas outward-flowing arrows represent the product of a step.

Table 1.1 indicates the ways managers and other Information Systems users can become involved in systems development.

Table 1.3 lists the key purposes and tasks associated with the seven development steps (bubbles) shown in Figure 1.1.

Systems development does not always proceed in the orderly, sequential course suggested by Figure 1.1. Some subset of steps may be repeated over and over until a satisfactory result is achieved. Or, we may undertake certain steps out of sequence. Finally, systems development may be outsourced to consultants or vendors, and personnel from within the organization will be part of the development team to serve as business process experts.

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