DEV475 Mastering Object-Oriented Analysis and Design with UML ...

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DEV475 Mastering Object-Oriented Analysis and Design with UMLIterations and PhasesIterations and PhasesInception Elaboration Construction TransitionPreliminaryIterationArchitect.IterationArchitect.IterationDevel.IterationDevel.IterationDevel.IterationTransition TransitionIteration IterationMinor Milestones: ReleasesAn iteration is a distinct sequence of activities based onan established plan and evaluation criteria, resulting in anexecutable release (internal or external).Mastering Object Oriented Analysis and Design with UMLCopyright © 2003 Rational Software, all rights reserved38Within each phase, there is a series of iterations. The number of iterations per phasewill vary. Each iteration results in an executable release encompassing larger andlarger subsets of the final application.An internal release is kept within the development environment and (optionally)demonstrated to the stakeholder community. We provide stakeholders (usually users)with an external release for installation in their environment. External releases aremuch more expensive because they require user documentation and technicalsupport — because of this, they normally occur only during the Transition phase.The end of an iteration marks a minor milestone. At this point, we assess technicalresults and revise future plans as necessary.1 - 38
Module 1 - Best Practices of Software EngineeringBringing It All Together: The Iterative ApproachBringing It All Together: The Iterative ApproachIn aniteration,you walkthrough alldisciplines.Disciplinesgroupactivitieslogically.Mastering Object Oriented Analysis and Design with UMLCopyright © 2003 Rational Software, all rights reserved39This slide illustrates how phases and iterations (the time dimension) relate to thedevelopment activities (the discipline dimension). The relative size of each color areain the graph indicates how much of the activity is performed in each phase oriteratino.Each iteration involves activities from all disciplines. The relative amount of workrelated to the disciplines changes between iterations. For instance, during lateConstruction, the main work is related to Implementation and Test and very littlework on Requirements is done.Note that requirements are not necessarily complete by the end of Elaboration. It isacceptable to delay the analysis and design of well-understood portions of the systemuntil Construction because they are low in risk.1 - 39
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