在本专栏的上一篇文章中，我讨论了诸如rdf这样的XML知识管理系统是如何另辟蹊径解决数据设计与建模这些老问题的。

In my last installment of this column, I discussed how XML knowledge management systems such as RDF shed a different light on age-old problems of data design and modeling.

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方案开发人员（Schema Developer）和管理员（Administrator）角色使用与支持变更管理系统所需的所有设计、实现，及部署任务的完成相关的用例。

The Schema Developer and Administrator roles cover the use cases related to completing all of the design, implementation, and deployment tasks required to support a change management system.

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这个站点是为了满足系统管理员的需求而设计的，其中使用的引擎与Stack Flow用来管理投票，编辑和标签的引擎一样。

This new site, designed with the needs of system administrators in mind, uses the same engine that Stack Overflow does for voting, editing, and tagging.

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