V模型和RAD模型的区别

1. V型：
V模型是软件测试过程中最重要的模型。它也被称为验证和验证模型。它是由已故的 Paul Rook 在 1980 年代引入的。 V 模型是一个顺序过程，其中只有在当前阶段完成后才开始下一阶段。在此模型中，当台阶向上弯曲时，台阶不会以线性方式移动。

2. RAD 型号：
RAD 模型是指快速应用程序开发，它是增量模型的类型。组件或功能是并行开发的，它可以处理小型项目和中型项目。在此模型中，可以在任何阶段进行任何更改。由于人数较少，因此生产率高。

V模型和RAD模型的区别：

S.No.	V MODEL	RAD MODEL
1.	V model is software development model but development and testing are not concurrent.	Rad model is a software development model where by the components or functions are developed in parallel as if they were mini projects.
2.	In this user involvement is also only in beginning.	In this user Involvement is only at the beginning.
3.	Flexibility of V-model is Little flexible.	Flexibility to change in rad model is Easy.
4.	Cost of V-model is expensive.	Cost of rad model is also Low.
5.	In V-model testing activities start with the first stage.	Testing is done in rad model after completion of coding.
6.	Guarantee of success through V-model is high.	Guarantee of success through RAD model is low.
7.	It is not iterative.	It is iterative.