RAD模型和螺旋模型之间的区别

1. 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以及中型项目。在此模型中，可以在任何阶段进行任何更改。由于人数较少，因此生产率很高。

2.螺旋模型：
螺旋模型是一种软件开发生命周期模型，高度用于风险驱动模型。根据给定项目的风险模式，螺旋模型可以帮助开发人员提高模型的效率，因为大多数风险已经得到处理。它由形成螺旋形状的多个循环组成，其中每个循环称为软件开发周期的阶段。

RAD模型和螺旋模型之间的区别：

S.No.	RAD MODEL	SPIRAL MODEL
1.	Rad model is a software development model where by the components or functions are developed in parallel as if they were mini projects.	Spiral model is a software development model and is made with features of incremental, waterfall or evolutionary prototyping models.
2.	Rad model requirements and early stage planning is not necessary.	Spiral model requirements and early stage planning is required.
3.	RAD model is used between large and small project.	Spiral model is used for large project.
4.	There is low amount risk in RAD model.	There is low amount risk in spiral model.
5.	In RAD model small team size is required.	In spiral model large team is required.
6.	Flexibility to change in rad model is Easy.	Flexibility to change in spiral model is not that difficult.
7.	In rad model overlapping of phases is possible.	In spiral model overlapping of phases is not possible.
8.	Testing is done in rad model after completion of coding.	Testing is done in spiral model at the end of the engineering phase.
9.	Cost of rad model is Low.	Cost of spiral model is very expensive.