Query optimization of XML algebra XML代数查询优化
Another benefit of the move to DB2 9 is the hybrid storage engine and a query optimizer that "understands" XML (mapping to relational algebra for queries involving XML).
迁移到DB 2 9的另一个好处是，混合型存储引擎和查询优化器“理解”X ML，可以把涉及XML的查询映射为关系语法。
The design of extending XML-RL query algebra is to support the querying with the object-oriented features.
扩展XML-RL查询代数的设计是为了支持具有面向对象特征的查询。
The extension of XML algebra with semantic query enhanced and semantic grid communication mechanism are also discussed to enable semantic accessing on data grid environment.
然后讨论其数据访问机制，即扩展XML代数来支持基于语义的数据访问。 最后介绍一种支持语义的网格通信机制及其通信原语。
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