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After a finite number of iterations, the final software package is given to the customer. In this methodology, the software is evolved as a result of periodic shuttling of information between the customer and developer.

This is the most popular development model in the contemporary IT industry.

Most of the successful software products have been developed using this model as it is very difficult (even for free credit report score Salisbury a whiz kid!) to comprehend all the requirements of a customer in one shot. There are many variations of this model skewed with respect to the project management styles of the companies. New versions free credit report score Salisbury of a software product evolve as a result of prototyping. credit expert The RAD models a linear sequential software development process that emphasizes an extremely short development cycle. The free credit report score Salisbury RAD model is a high speed adaptation of the linear sequential model in which rapid development is achieved by using a component-based construction approach. Used primarily for information systems applications, the RAD approach encompasses the following phases:1. Business modeling The information flow among business functions is free credit report score Salisbury modeled in a way that answers the following questions: What information drives the business process? free credit repor The information flow defined as part of the business modeling phase is refined into a set of data objects that are needed to support the business. The characteristic (called attributes) of each object is identified and the relationships between these objects are defined. The data objects defined in the data-modeling phase are transformed to achieve the information flow necessary to implement a business function. Processing the descriptions are created for adding, modifying, deleting, or retrieving a data object. The RAD model assumes the use of the RAD tools like VB, VC++, Delphi etc rather than creating software using conventional third generation programming languages. The RAD model works to reuse existing program components (when possible) or create reusable components (when necessary). monitor credit report

In all cases, automated tools are used to facilitate construction of the software. Since the RAD process emphasizes reuse, many of the program components have already been tested.