Software Processes

Software Processes

1. coping with change

   • large software projects.Eg-technologies
   • leads to rework

2. reducing the cost rework

   • change avoidance
   • change tolerance

3. software prototyping

   • benefit
     • improved maintainability
     • improved design quality
   • def:initial version of a system
     • process to help requirements
     • develop a UI design
     • testing process
   • prototype development
     • functionality
       • focus on functional
       • not include error checking
       • focus a certain area;not understood
     • rapid prototyping language
   • throw-away prototypes
     • discarded as not a good basis
       • non functional requirements
       • undocumented
       • degraded
       • not organisational standards
   • process of prototype
     • prototyping plan
     • outline definition
     • executable prototype
     • evaluation report

4. incremental development

   • develop the system in increments
   • used in agile methods

5. incremental delivery

   • user requirements as priority
   • realistic evaluation about practical use of software
   • use by end users
   • different to implement for replacement system
   • advantange
     • lower risk of overall project failure
     • tend to receive the most testing
     • system functionality is available ealier
   • problem
     • the essence of iterative processes is that the specification is developed in conjuction with the software
     • hard to identify common facilities

6. Boehm's spiral model

   • spiral vs sequence of activities
   • spiral model sectors
     • objective setting
     • risk assessment and reduction
     • development & validation
     • planning
   • represents a phase in the process
   • spiral model usage
     • helping people think about iteration in software processes

7. RUP

   • RUP iteration
     • cross phase iteration
       • loop
     • inphase iteration
       • developed incrementally
     • phase
       • transition
       • contruction
       • inception
       • elaboration
   • Modern generic process
   • 3 prespective
     • dynamic
     • static
     • practice
   • good practice
     • use component based architectures
     • use component based architectures
     • manage requirements
     • control changes to software