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actual system and product is developed in the implementation phase and it is tested in the testing phase. After testing is done successfully the system is given to the deployment phase and hence all the issues are to be solved in the maintenance phase (Langer, 2008).V ModelAccording to Mishra, Dubey, (2013), “The verification or validation model (V model) is one in which the steps are executed sequentially”. The execution of next phase starts only with completion of present phase and each phase in the development model and every phase in the model is associated with the testing stage. In parallel with the development phase, the testing phase is planned. In the projects where the requirements are clearly defined, the V model can be used. The other requirements to implement V model are the huge amount of resources and members with good expertise. As there is no prototype implemented in prior, risk involved is high in meeting customer’s requirements (Mishra, 2013, pg.25). Stages in V ModelThe identification of requirements is the primary phase of the four validation phases to beimplemented. The analysis is done on the requirements of customer and acceptance test design planning is adopted to make an analysis of business requirements. The second stage involves the system designing and detailing the hardware and communication setup for the product development. The third phase called architectural design first analyses the possible technical approaches and chooses the best taking in to efficiency and cost involved. The entire system is
ANALYSIS OF AN INFORMATION SYSTEM13subdivided in to modules and the communication between each of them along with outside worldis clearly defined. The low level designing is the final stage where design of each module is specified. The architecture must be such that the design must be compatible with the internal modules and external world (Mishra, 2013, pg.27). Comparisons between V-model and Waterfall modelAs stated byMurugaiyan, Balaji, (2012), “Various models of SDLC have vivid stages andsequence of these stages helps to develop the project. In some models, testing phase starts and in some models it will be at later stages where in some models there are some synchronous procedures”. Below are some of the comparisons between V-model and the waterfall model are:In V-model and the Waterfall model, the requirements can be gathered and analyse phase where requirement specifications are implemented and documented appropriately (Murugaiyan, et al., 2012). Design model is mainly used in waterfall model whereas in V-model it is to develop product’s functional design. The implementation phase in the waterfall model has some functionalities with the coding phase exists in V-model. In this phase, the V-model’s coding will be implemented or developed by the developers (Murugaiyan, et al., 2012).