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Appendix C. The Principles of the Dynamic Systems Development Method generate, create none none in none projectscode qr c# project as possible an none for none d to continue throughout the project life cycle. Testing is an integral part of each increment and is conducted to ensure that the software meets its business needs and is robust and reliable. 9.

A collaborative and cooperative approach between all stakeholders is essential Because the low-level requirements are not xed at the outset in a DSDM project, there must be continuous cooperation and collaboration between sponsors, developers, and users throughout the life of a project. The additional eight assumptions are as follows: 1. No system is built perfectly on the rst try As a rule of thumb, 80% of the business bene t comes from 20% of the design requirements; therefore, DSDM starts implementing this rst 20%, which is suf cient as long as the end users are satis ed with the functionality, and that the missing 80% does not cause any serious business consequences.

This mitigates the risk of the project going over deadline and over budget. 2. Project delivery should be on time, on budget, and of good quality DSDM emphasizes the need to meet project timescales and cost, but not at the expense of quality.

3. Each step of the development only need be completed far enough for the next step to begin This practice allows a new iteration of the project to commence without unnecessary delay. Changes in design can coincide with the changes in demand from the end users, because every iteration of the system is improved incrementally.

4. Both project management and development techniques are incorporated DSDM recognizes that technical agile best practices cannot exist successfully in a project management vacuum and acknowledges the need to follow good project management techniques. 5.

DSDM can be applied in new projects and for expanding current systems Just because the previous phase of a particular development project was based on another development approach, the adoption of DSDM for future development and enhancements to the system is not precluded. 6. Risk assessment should focus on business function being delivered, not on the development process nor its artifacts Projects can go wrong in spite of following good development practices or having produced very elegant but time-consuming design or requirement documents; DSDM emphasizes the scrutiny of delivered business function as the means of assessing project risk.

7. Management rewards product delivery rather than task completion DSDM considers customer satisfaction and success using the delivered business functionality to be a better measure of project progress than developers reporting the completion of a particular iteration. 8.

Estimation should be based on business functionality instead of lines of code As with assumptions 6 and 7, this assumption focuses again on the delivery of successful business functionality to the customer rather on traditional metrics of counting the lines of code or function points.. console app Appendix C. The Principles of the Dynamic Systems Development Method Project Life-cycle Phase Feasibility Business Study Preproject Phase Functional Model Iteration Postproject Phase Implementation Design & Build Iteration C.1 Graphical overview of the DSDM phases and stages. C.4 The DSDM Phases and Stages DSDM consists of three phases and a number of substages (Figure C.1 provides a graphical overview of the DSDM phases and stages): The preproject phase sets the context of the project and ensures it is set up correctly from the outset to give the project the best likelihood of success. Key products delivered from this phase include the initial de nition of the business problem to be addressed, budget and resourcing, outline scope and plans for the feasibility study, and a decision on whether or not to proceed with the project.

The project life-cycle phase combines both sequential and iterative stages, leading to the incremental development of the system. Following initial feasibility and business study stages, the project iterates through the functional model, design and build, and implementation stages: Feasibility study In this stage, the likelihood of the project meeting the customer s business requirements is evaluated. Other issues that are covered in this stage include assessing the suitability of DSDM in implementing the customer s business requirements, reviewing possible technical solutions to the business problem, and producing initial estimates of costs and timescales.

The key products from this stage include a feasibility report, an optional feasibility prototype, an outline plan that also addresses quality issues, and a risk log..
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