原型模型和螺旋模型之间的区别

1.原型模型：
原型模型是一种软件开发生命周期模型，当不完全了解客户的最终产品应如何及其需求时，可以使用该模型。因此，在此模型中，最终产品的原型首先由开发人员开发，然后进行测试，并根据客户反馈进行更改，直到客户对原型感到满意为止。 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。

螺旋模型和原型模型之间的区别：

S.No.	Prototype Model	Spiral Model
1.	Prototype model is a software development model in which a prototype is built, tested and then refined as per customer needs.	Spiral model is a risk-driven software development model and is made with features of incremental, waterfall or evolutionary prototyping models.
2.	It is also referred to as rapid or closed ended prototype.	It is also referred to as meta model.
3.	It does not give emphasis on risk analysis.	It takes special care about risk analysis and alternative solution is undertaken.
4.	In prototype model, customer interaction is continuous until the final prototype is approved.	In spiral model, there is no continuous customer interaction.
5.	It is best suited when the requirement of the client is not clear and supposed to be changed.	It is best suited when the customer requirements are clear.
6.	Cost effective quality improvement is very much possible.	Cost effective quality improvement is not possible.
7.	In Prototype model, improvement of quality does not increases the cost of product.	In Spiral model, improvement of quality can increase the cost of product.