It provides a DB2 relational model for the remote data and assists the federated engine in queryprocessing by sending sub-queries to the remote data source.
它提供了远程数据的DB 2关系模型,并通过向远程数据源发送子查询以帮助联邦引擎实现查询处理。
2
Query optimization technology in DB2 9.7 provides increased efficiency for processing queries against relational views of XML data.
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。
3
In this paper, we describe an algorithm, for queryprocessing with semantic optimization in distributed relational database systems.