RDA可用于采取自下而上或自上而下的方式开发数据模型，允许分析已有数据库和通过对已有数据资产的反向工程开发数据模型。
RDA can be used to develop data models in either a top-down or bottom up manner, allowing analysis of existing databases and development of data models by reverse engineering of existing data assets.
接下来，继续进行自上而下的开发方式，通过创建一个新的实现来开始实现中介流组件。
Next, continue the top-down development approach by beginning to implement the mediation flow component by creating a new implementation.
前面的小节描述了自上而下和自下而上场景，它们主要侧重于全新的开发。
The previous sections describe both the top-down and bottom-up scenarios, which primarily focus on new development.
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