Data federation addresses the problem of integrating data from heterogeneous source models and includes concepts to map those different source models into the common model at the federated layer.
数据联合处理有关集成来自异类源模型的数据的问题，包括将这些不同的源模型映射到联合层的公共模型的概念。
Each system has its own proprietary semantic meaning, but is mapped to a logical data model which can be instantiated as a physical federated model or a canonical message model.
每个系统都有其专有的语义，但是被映射到一个逻辑数据模型，可以将此模型实例化为一个物理联合模型或规范消息模型。
First, you need to get an overview of everything we defined as mapping from any of our data sources to the federated model.
首先，你需要有一个数据源到联邦模型的整体视图。
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