将企业的各个业务领域链接在一起的核心数据实体跨所有业务线保持一致和可信。

That the core data entities linking together the business domains of an enterprise are consistent and trusted across all lines of business.

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因为客户端无法检测出id是无效的，所以它可以在另一个上下文中使用这个ID以链接实体记录。

Because the client can't detect that the id is invalid, it can use the id in another context to link to the entity record.

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链接表的每一行表示两个实体之间的关系。

Each row of the link-table represents a relationship between two entities.

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