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1 Chapter 4 kareRCIserIsviFIsa RsþGnuvtþKMerag Selection Of An Appropriate Project Approach.

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Presentation on theme: "1 Chapter 4 kareRCIserIsviFIsa RsþGnuvtþKMerag Selection Of An Appropriate Project Approach."— Presentation transcript:

1 1 Chapter 4 kareRCIserIsviFIsa RsþGnuvtþKMerag Selection Of An Appropriate Project Approach

2 2 CHOOSING TECHNOLOGIES The development of software in-house suggests that the project has certain characteristics: the project team and the users belong to the same organization; the project being considered slot into a portfolio of existing computer-based system; the methodologies and technologies to be used are not selected by the project manager, but are dictated by local standards.

3 3 An outcome of project analysis will be the selection of the most appropriate methodologies and technologies.

4 4 Methodologies Waterfall Method V-process Model RAD Spiral Model

5 5 Waterfall Method Also known as the Traditional method There is a sequence of activities working from top to bottom.

6 6 Waterfall Method (cont) Advantages: Shorter development time Cost possible Drawbacks: System limitations not being discovered until later in the development cycle Clients not being able to see the product until its is completely finished.

7 7 Feasibility study User requirements Analysis System design Program design coding Testing operation

8 8 V-process Model The V-process can be seen as expanding the testing activities in the waterfall model.

9 9

10 10 V-Process Method (cont) Advantages: Customer more satisfaction Increased quality Drawbacks: More time More resources

11 11 RAPID APPLICATION DEVELOPMENT Customers of IT are concerned with getting working business applications delivered quickly and at less cost. A response to this has been Rapid Application Development (RAD).

12 12 Business Modeling Data Modeling Process Modeling Application Generation Testing and Turnover Team #1 Business Modeling Data Modeling Process Modeling Application Generation Testing and Turnover Team #2 Business Modeling Data Modeling Process Modeling Application Generation Testing and Turnover Team #3

13 13 RAD (cont) Advantages: Increased speed of development Increased quality Drawbacks: Reduced scalability Reduced feature Need more resources

14 14 Spiral Model Is a software development process combining elements of both design and prototyping in stages. Risk analysis Engineering- Design Construction Planning Customer Communication Customer Evaluation

15 15 Spiral (cont) Advantages: Increased quality Less risks Drawbacks: Complexity It is a new model


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