query rewriting造句

In general, the complexity of query rewriting is NP-complete.
Therefore query rewriting translates such a query formulated over the global schema to a query over the various data sources.
The resulting rewrite may not be an equivalent query but maximally contained, and the resulting tuples may be incomplete . the MiniCon algorithm is the leading query rewriting algorithm for LAV data integration systems.
"' Query Rewriting "'is a technique used in mediation based data integration systems for translating the queries formulated over the mediated schema to a query over the various sources by making use of the view definitions.
It's difficult to find query rewriting in a sentence. 用query rewriting造句挺难的