在第一篇文章中，我们了解到REST的URL命名规范和内容协商如何让我们以统一的方式来访问文档、数据和服务。
In the first article we learned about how REST's URL naming schemes and content negotiation allow us to unify access to our documents, data and services.
EII可以提供对数据和内容的统一观点，这样就简化了对潜在的信息服务的表现和访问。
EII can provide a unified view of data and content, simplifying representation of and access to underlying information services.
服务对象数据(Service Data Object, SDO)使用统一的抽象代替了各种各样的数据访问模型来创建、检索、更新和删除供服务实现使用的业务数据。
Service data Objects (SDOs) replace diverse data access models with a uniform abstraction for creating, retrieving, updating, and deleting business data used by service implementations.
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