Concern-Driven Software Development

在模型驱动工程（MDE）中，软件开发被看作是一个模型生成、细化和集成的过程。在软件开发生命周期的不同点或不同阶段，为了不同的目的，使用最合适的建模形式，在最合适的抽象层次上为手头的任务构建模型，并且定义模型转换，建立这些模型之间的关系。已经证明MDE可以显著降低软件开发的成本。MDE在实践中没有得到广泛应用的主要原因之一是缺乏模型重用。通常，开发中的系统的模型是从头开始创建的，而不是重用已经存在的模型。这使得建模通常比编码更麻烦，因为现在大多数编程语言都提供了大量的库或框架来促进代码重用。

With Model-Driven Engineering (MDE), software development is seen as a process of model production, refinement and integration. Models are built at different points or during different phases of the software development life cycle for different purposes using the most appropriate modelling formalism(s) at the most appropriate level(s) of abstraction for the task at hand, and model transformations are defined that establish relationships among these models. It has been shown that MDE can significantly lower the costs of software development. One of the main reasons why MDE is not widely used in practice is the lack of model reuse. Typically, models for a system under development are created from scratch, rather than reusing already existing models. This makes modelling often more cumbersome than coding, since most programming languages nowadays offer extensive libraries or frameworks facilitating code reuse.