为了解决那个问题，OODT提供了对分布式资源的透明访问、数据恢复和查询优化功能以及分布式处理和虚拟存档。
To solve that problem, OODT provides transparent access to distributed resources, functionality for data discovery and query optimization, as well as distributed processing and virtual archives.
同样，由于SQL使用集合级别的处理以及DB 2优化查询来确定数据导航逻辑，所以这是可能的。
Again, this is possible because SQL USES set-level processing and DB2 optimizes the query to determine the data-navigation logic.
DB 2 9.7中的查询优化技术能够提高针对XML数据的关系视图的查询处理效率。
Query optimization technology in DB2 9.7 provides increased efficiency for processing queries against relational views of XML data.
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