To be effective, model-driven systems development must address these system concerns and also provide the development team with an improved understanding of the system, its goals, and its components.

为了进行得有效，模型驱动系统开发必须处理这些系统关注点，也必须提供给开发团队一个系统以及其目标和组件的改善理解。

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To better understand model-centric development concepts, take a step back from the code and analyze the behaviour of your system.

为了更好地理解以模型为中心的开发的概念，需要退一步回到源代码并且分析系统的行为。

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The model levels listed in the rows address increasing levels of specificity and detail as system development progresses.

在行中所列出的模型级别提出了增长的特性级别，并按照系统开发进展详细说明。

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To a large extent, China is where it is now because it has followed the western model of economic development for developed economies, while retaining its own political system.

FORBES: China's Outdated Practice Of Capitalism

The state of the art in this model of programming is Pegasystems, which is often called a BPM system but is really a declarative application development environment.

FORBES: A New Open-Source Model For SaaS