ðHgeocities.com/csit101/Lecture12/Page9.htmlgeocities.com/csit101/Lecture12/Page9.htmlelayedx“ŽÕJÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÈ Ù‹AOKtext/htmlpa'9nAÿÿÿÿb‰.HMon, 22 Nov 1999 19:24:59 GMT]Mozilla/4.5 (compatible; HTTrack 3.0x; Windows 98)en, *“ŽÕJA Prototyping and RAD

Prototyping and RAD

 

Prototyping and RAD are two alternatives to the systems development life cycle approach.

  1. With prototyping, a model can be used to simulate an actual system before it is installed.
  2. With RAD, time to design a new system could be shortened.

 

Prototyping means to build a model that can be modified before an actual system is installed

  1. It can be used if there is no time or opportunity to complete a systems life cycle.
  2. It is a fast alternative to the six phase process of traditional systems analysis and design.
  3. It can be used to devise a model of a new system for users to try out.
  4. It will allow users to find out quickly how a change in the system can help or hinder their work.
  5. Relying on Prototyping alone can be risky because it could lead to changes being made without costs or other matters being considered.

 

 

RAD stands for rapid applications development.

  1. It involves the use of
    1. Powerful development software
    2. Small, specialized teams
    3. Highly trained personnel
  2. Resulting time-and-billing system would likely cost more.
  3. The quality of completed system and development time would likely be better.

 

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