itech9

From http://en.wikipedia.org/wiki/Software_development_methodology

• 3.1 Waterfall model
  .. is a sequential development process, in which development is seen as flowing steadily downwards (like a waterfall) through the phases of requirements analysis, design, implementation, testing (validation), integration, and maintenance.
• 3.2 Prototyping
  .. is the framework of activities during software development of creating prototypes, i.e., incomplete versions of the software program being developed.
  .. Not a standalone, complete development methodology, but rather an approach to handling selected portions of a larger, more traditional development methodology (i.e. Incremental, Spiral, or Rapid Application Development (RAD)).
• 3.3 Incremental
• 3.4 Spiral
• 3.5 Rapid Application Development (RAD)
  .. is a software development methodology, which involves iterative development and the construction of prototypes.
  .. Key emphasis is on fulfilling the business need, while technological or engineering excellence is of lesser importance.