Development Methodologies

Development Methodologies

1. Waterfall

   • Analysis
     • design
       • implementation
         • testing
           • documentation
             • when guides to use the software are created. also includes a guide of how it was tested
           • several purposes:
             • software meets spec
               • robust
                 • reliable
           • three types of data
             • normal
               • data well within the parameters
             • extreme
               • data on the edge of acceptable range
             • exceptional
               • data outside of acceptable parameters
         • process of looking at other stages to check for any errors. If errors spotted here, could show flaw in the design
       • software spec turned into a design - more time spent on this reduces time elsewhere
         • breaks down into different steps. The further it is broken down, the easier coding will be (top down design and stepwise refinement)
           • modularity - leads to different sub programs
     • problem is analysed by system analyst.
       • software spec made taking into account requirements etc. Legally binding