V Diagram Validation. It is also known as verification and validation model. The v model is a graphical representation of a systems development lifecycle.
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Development of each step directly associated with the testing phase. It is also known as verification and validation model. The user requirements specification describes what the user needs from.
Although it is considered as an improvement to the waterfall model and it has some similarities as the process also based on sequential steps moving down in a linear way it differs from the waterfall model as the steps move upwards after the coding phase to form the typical v shape.
It also defines roles. Validation can be defined as the establishment of documented evidence through systematic testing that a facility piece of equipment system or process produces the output for which it was designed and that this output is produced with the required quality characteristics. The validation diagram shows that at whatever stage of development you are you need to check back to the system specification user requirements and business case to see if it meets the purpose. The validation plan defines what will be validated and the approach you will use.
