I find in PMBOK these 2 terms of classified but not explained clearly, based on her inputs I tried here to elaborate it more:
PHASE TO PHASE RELATIONSHIPS
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Iterative
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Overlapping
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1
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since work by nature and outcomes remains same, though
scope, schedule, cost, place, contracts changes, and its successive phases becomes undefined and varying to any extend. |
its phases are not similar in their nature and outcomes and they are
linked in a sequence and dependent like sequential phases but unlike starting
of second after one, it can overlap,
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2
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one phase is planned and executed,
when 1st phase in execution 2nd phase is planned. |
here since phases are entirely different in nature hence they can be
either planned earlier or later
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3
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staff, vendors and workforce may repeated same as nature of work
remains same.
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Staff , vender, workforce will change
as per the change in nature of work |
4
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Example : research program ,
there is no clarity for next phase.
why it is iterative , because, research, research research -------its repetition. Here next phase planning much depend on, further scope as per results of 1st phase. |
for example, construction may
begin when quarter design work completed. Concept - design- construct -testing - these are the phases and can be overlapped but not similar in nature. Here you can plan in advance or later |
