在消息传递中，标准数据模型[3]模式要求系统提供通用的格式。
In messaging, the canonical data model [3] pattern requires that systems vend a common format.
军用的数据系统甚至可能有更严格的容错要求。
Data systems for the military might have even more stringent fault-tolerance requirements.
存在这样的实际需求，需要提高对功能和驻留在现有遗留系统中的宝贵业务数据的访问，并要求能够从其他系统方便地进行访问。
There was real need to improve access to functionality and valuable business data residing in existing legacy system and to be able to access it easily from other systems.
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