integration - 您如何使用功能点估算 EAI 项目？

Question

您如何使用功能点估算EAI项目？

Answer 1

FP analysis is inappropriate for integration projects of any sort as it presupposes that you can specify the application up-front. Most of the work in any integration project of non-trivial complexity is reverse-engineering the nuances of the environment. Typically the environment will not be exhaustively documented in the sort of cases you would expect to use an EAI system in.

By the time you have actually done this level of reverse engineering to the point of having a complete specification you have done most of the work in the project - the actual development is fairly short and sweet by comparison. Therefore the function point analysis is only providing an estimate for a small part of the system.

As an aside, much of the work I do is data warehouse systems in Commercial insurance companies, where extensive prototyping and reconciliation exercises to produce detailed specification documents are actually quite appropriate to the environment. Typically this takes longer than actually developing the production system as most of the data issues are resolved in the prototyping work. EAI systems have a similar class of implementation issues.

Answer 2

好吧，鉴于 FP 计数基于存储和最终用户界面，不确定它是否对 EAI 有意义（据我所知很少）。

我会说你不能，至少不是以一种有用的方式。FP 计数通常被视为一种不同精度的可疑做法，将其用于集成项目只会增加更多的模糊性。