RAD (Rapid Application Development) model follow the extreme short software development cycle to reduce delivery time to minimum level that provide a competitive edge. Rapid application development uses component based development approach and to implement RAD model successfully you need to define requirement accurately prior to development begins. Rapid application development methodology includes iterative development, quick prototype creation and use of computer aided software engineering (CASE) to complete the development work in short time.

Rapid Application Development Process

Business Modeling:

Defining information flow among business function is the crucial phase as entire application build on it. Who generate information, what information is generated and where does this information goes, these type of question must be precisely answered in order to design business modeling.

Data Modeling:

Data modeling is a process of refining the information in to useful and logical data sets objects, then the attributes are identified and relationship between these data objects are defined.

Process Modeling:

To implement a business function, data modeling need to be transformed and processing descriptions are defined for adding, deleting, editing, modifying and retrieving the data object.

Application Development:

to develop rapid application, automated tools are used to facilitate the process of custom software development.

Quality Testing:

Mostly programming components are tested during development that reduces the overall testing time, but new components are tested separately to ensure bug free software delivery.

Rapid application development is completely based on object oriented approach and if modularization of project is difficult and not accurate then RAD will surely fail. RAD requires high skills and commitment for successful implementation.

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