设计时的映射结果通常为联合视图，与关系数据库视图类似，可以随后在联合服务器上进行部署或创建。

The result of mapping in design time are typically federated views, similar to relational database views, which then can be deployed or created on the federation server.

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虽然这也许看来直接类似于关系数据库的键机制，但是有一个重要的差异：大多数解析器都将这些指针看作是单向的。

While this may seem to be directly analogous to a relational database's key mechanisms, there's one important difference: Most parsers treat these Pointers as unidirectional.

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RDQL 的语法表面上类似 SQL 的语法，它的一些概念对已经使用过关系数据库查询的人来说将比较熟悉。

RDQL's syntax superficially resembles that of SQL, and indeed, some of its concepts will be familiar to anyone who has worked with relational database queries.

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