敏捷模型和螺旋模型的区别
由于我是初学者，谁能用简单的术语向我解释螺旋模型和敏捷模型之间的区别？你能给我一些现实世界的例子吗？螺旋比敏捷更有用，反之亦然...我知道互联网上有很多链接，但它们很难理解，因为我是初学者..所以，如果您用简单的术语解释，将会有很大的帮助？ ？提前谢谢...
Can anyone explain me the differences between the spiral and agile models in simple terms as I am beginner?? Can you give me some real world egs. where spiral is more useful than agile and vice-versa... I know there are so many links available on internet but they are hard to understand as I am a beginner .. So it would be great help if you explain in simple terms?? Thanx in advance...
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螺旋模型是迭代开发的一个例子。典型的迭代将在 6 个月到 2 年之间，并将包括生命周期的所有方面 - 需求分析、风险分析、规划、设计和架构，然后发布原型（要么进化，要么丢弃，取决于项目团队选择的具体方法）或工作软件。重复这些步骤直到项目结束或完成。
另一方面，敏捷开发包括许多不同的方法论，这些方法论对生成软件项目所采取的步骤提供了具体指导，例如极限编程、Scrum 和 Crystal Clear。所有敏捷方法的共同点是它们都是迭代和增量的。敏捷方法中的迭代通常较短——大多数情况下为 2 到 4 周，并且每次迭代都会以一个可用的软件产品结束。然而，与螺旋模型不同，生成的软件不是原型 - 它始终是扩展到最终产品的高质量代码。
The Spiral Model is an example of iterative development. A typical iteration will be somewhere between 6 months and 2 years and will include all aspects of the lifecycle - requirements analysis, risk analysis, planning, design and architecture, and then a release of either a prototype (which is either evolved or thrown away, depending on the specific methods chosen by the project team) or working software. These steps are repeated until the project is either ended or finished.
Agile development, on the other hand, includes a number of different methodologies with specific guidance as to the steps to take to produce a software project, such as Extreme Programming, Scrum, and Crystal Clear. The commonality between all of the agile methods is that they are iterative and incremental. The iterations in the agile methods are typically shorter - 2 to 4 weeks in most cases, and each iteration ends with a working software product. However, unlike the spiral model, the software produced isn't a prototype - it is always high quality code that is expanded into the final product.