模型：说明Rational Soft ware Architect工具如何支持面向服务体系结构的规范的模型驱动开发(Model - Driven Development, MDD)方法。

Models: Demonstrate how the Rational Software architect tool supports a Model-Driven Development (MDD) approach to the specification of service-oriented architectures.

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处理SOA的另外一种自顶向下的方法是借助模型驱动的体系结构(Model - driven architecture, MDA)工具，以便定义可以生成代码的模型来构建服务。

Another top-down way of approaching SOA is through MDA — Model-driven architecture — tools allowing the definition of models that can generate code to build services.

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