Software is a fundamental part of any computer system. Generally this component is the one that implements all the applications in the computing process. The development of such software entails a disciplined approach that may be accomplished in a number of ways. RAD Rapid Application Development is one such way that is considered as a software production methodology.
This method involves the use of models or prototypes that are speedily derived and implemented. Such prototypes are basically models of the current as well as the proposed processes of this system. With such an approach the requirements can be clearly understood resulting in a satisfactory software product. Apart from the heavy reliance on the prototyping process this method also carries on in an iterative manner.
Most importantly these iterations offer the user and developer a chance to work closely and understand the functional components of such a project. However with such a methodology functionality and performance are given less priority when compared to the faster delivery of such a product. Therefore in order to accomplish this time boxes are used whereby each step is assigned a tight time schedule in which it must be accomplished or discarded.
Therefore time in this approach is considered more important than the quality of the product.Generally RAD consists of four main stages. As a common discipline in software design each of these phases has definite deliverables. This contributes to the need to implement a systematic approach to such a procedure. Moreover each stage can be assigned a viable duration that must not be exceeded.
Most importantly for this method is the underlying proposition that faster is better. Therefore the time boxes here are a vital feature within the methodology because through them every stage can be strictly scheduled. Furthermore the deliverables that are time boxed must be accomplished without regard for finer detail. In this way the rapidity aspect is enhanced. Generally this will be implemented throughout the main stages of this methodology including the business process and data modeling application generation which also includes the testing and turnover.
Generally every step has an associated deliverable and each of them will be tested singularly before being integrated to implement the system and acceptance tests ahead of the turnover. Typically these tests are carried out on the unit and system levels to ensure that the integration carries on successfully. Basically business modeling as the initial phase here describes the business functions of such a system.
This entails a collection of business flows describing the current system. Once this has been accomplished then a proposed system can be derived. This is after an assessment of these shortcomings of the current system. This can be achieved through the data modeling process. Within this stage the data objects must be well defined.
Generally the procedures that manipulate this data within the proposed system are also included within the process modeling stage. Moreover this will describe the business data and processes can than be translated into the suitable application during the generation phase. Using computer aided software engineering (CASE) tools the software product can eventually be prototyped. This will the be tested to ensure that it complies with the user requirements before it can be handed over. All this is speedily executed using the RAD Rapid Application Development.
This method involves the use of models or prototypes that are speedily derived and implemented. Such prototypes are basically models of the current as well as the proposed processes of this system. With such an approach the requirements can be clearly understood resulting in a satisfactory software product. Apart from the heavy reliance on the prototyping process this method also carries on in an iterative manner.
Most importantly these iterations offer the user and developer a chance to work closely and understand the functional components of such a project. However with such a methodology functionality and performance are given less priority when compared to the faster delivery of such a product. Therefore in order to accomplish this time boxes are used whereby each step is assigned a tight time schedule in which it must be accomplished or discarded.
Therefore time in this approach is considered more important than the quality of the product.Generally RAD consists of four main stages. As a common discipline in software design each of these phases has definite deliverables. This contributes to the need to implement a systematic approach to such a procedure. Moreover each stage can be assigned a viable duration that must not be exceeded.
Most importantly for this method is the underlying proposition that faster is better. Therefore the time boxes here are a vital feature within the methodology because through them every stage can be strictly scheduled. Furthermore the deliverables that are time boxed must be accomplished without regard for finer detail. In this way the rapidity aspect is enhanced. Generally this will be implemented throughout the main stages of this methodology including the business process and data modeling application generation which also includes the testing and turnover.
Generally every step has an associated deliverable and each of them will be tested singularly before being integrated to implement the system and acceptance tests ahead of the turnover. Typically these tests are carried out on the unit and system levels to ensure that the integration carries on successfully. Basically business modeling as the initial phase here describes the business functions of such a system.
This entails a collection of business flows describing the current system. Once this has been accomplished then a proposed system can be derived. This is after an assessment of these shortcomings of the current system. This can be achieved through the data modeling process. Within this stage the data objects must be well defined.
Generally the procedures that manipulate this data within the proposed system are also included within the process modeling stage. Moreover this will describe the business data and processes can than be translated into the suitable application during the generation phase. Using computer aided software engineering (CASE) tools the software product can eventually be prototyped. This will the be tested to ensure that it complies with the user requirements before it can be handed over. All this is speedily executed using the RAD Rapid Application Development.
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