Software Development Strategies

Software Development Strategies

1. Extreme Programming

   • Improve software quality and responsiveness to changing customer requirements.
   • A form of agile programming:
   • +VE's
     • Really fast way of designing an application.
     • Tends to be cheaper than other development strategies, as the feedback is incorporated during developmental stage instead of when an initial prototype is released.
   • -VE's
     • Many small releases in a small amount of time-lots of iterations- meaning a lot of stress and pressure to meet short deadlines.
     • Focusses on code aspect rather than design
     • Requires teamwork, constant review, so if your clients aren't nearby, deadlines may not be met in time.

2. Agile Programming

   • Meaning you are flexible to changes, or suggestions from your clients on how to improve your software.
   • +VE's
   • -VE's

3. What they all have in common

   • Analyse
     • See what is needed in the new prototype, this can be from client responses to make the software easier to use.
   • 2. Design
   • 3. Implementation
     • Code and test
   • 4. Evaluation
     • See what went well, what could be improved, this generates the analysis key targets for the next 'iteration'
   • Iterations combine the 4 main elements of software development
     • These can last

4. Waterfall

   • User involvement
     • Limited. Only at the analysis and evaluation stage.
   • Origins
     • Each step has targets to achieve before moving onto the next step.
     • From the manufacturing industry
   • Benefits and drawbacks
     • Is still a popular approach to software development, but there are better models out there now such as agile programming

5. Spiral

   • Very similar to waterfall, many different prototypes are created until the end product is finished.
   • Intentions of what the software will do are set out at the beginning and an intiial prototype is formed. Each new prototype is refined.
   • Uses
     • Used for larger projects, that take many years to implement and complete.

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