为了使用这个功能，最终用户不需要学习复杂的查询语言，也不需要为他们开发特殊用途的用户界面。
No complex query language has to be learned or special-purpose user interfaces developed for the end-user to make use of this functionality.
这些标准更加简单，而且由于基于查询语言MDX，它们更像开发人员用来和关系型数据库交互的API（ODBC、JDBC）。
These standards were simpler and because they were based upon a query language (MDX), were more like the APIs that developers were used to for talking to relational databases (ODBC, JDBC).
OCL查询语言使开发人员从基础XML数据模型解脱出来，允许他们将重点放在其应用程序的对象模型上(这也是他们非常熟悉的部分)。
The OCL queries free developers from the burden of the underlying XML data model and allow them to concentrate on the object model of their application, which they usually know very well.
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