Steps in Rapid Application Development (RAD) model

Rapid Application Development (RAD) model heavily based on prototyping and iterative development and no detail pre-planning is involve in this model. This model was first proposed by IBM in 1980.

The software project which we can brake into modules can use this RAD model. Development of each module requires basics SDLC steps like waterfall steps.

Steps in RAD model:

  1. Define The Requirements:
    At this step you dont neet to collect the requirements like the other development model the broader nature of requirement is enough that will help you to get the specific kind of requirements.

  2. User Description:
    This is where prototype development take place on the basis of user feedback, and this step validate the date collected in the 1st step.



  3. Constructions:
    At this stage we refine the prototype and make it ready to deliver. All kind of required modifications and enhancements are made in phase.

  4. Cutover:
    The last stage where all the independent developed modules are move to the live production, Here any full scale testing and team training is performed if required.

These are some advantages and disadvantages of RAD model.

Advantages:

  1. Reduce development Time.
  2. Encourages customer feedback.
  3. Quick initial reviews.
  4. Easy to accommodate charging the requirements.

Disadvantages:

  1. Need of highly skilled team.
  2. Customer involvement is required throughout the RAD model.
  3. Implementable only those projects which can be modularized.

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