Waterfall Development With waterfall development, analysts and users proceed
sequentially from one phase to the next. (See Figure 2-2.) The key deliverables for
each phase are typically voluminous (often, hundreds of pages) and are presented
to the approval committee and project sponsor for approval as the project moves
from phase to phase. Once the work produced in one phase is approved, the phase
ends and the next phase begins. As the project progresses from phase to phase, it
moves forward in the same manner as a waterfall. While it is possible to go backward
through the phases (e.g., from design back to analysis), it is quite difficult. (Imagine
yourself as a salmon trying to swim upstream in a waterfall).