624 search results - page 7 / 125 » Mutant Query Plans |
ICDT
1999
ACM
15 years 1 months ago
1999
ACM
In data integration systems, queries posed to a mediator need to be translated into a sequence of queries to the underlying data sources. In a heterogeneous environment, with sour...
72
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XIMEP
2004
ACM
15 years 2 months ago
2004
ACM
We give an overview on how XQuery processing works in our native XML database system Natix. After a brief description of the query compiler we focus on the aspect of join ordering...
SIGMOD
2004
ACM
15 years 9 months ago
2004
ACM
Dynamic plan migration is concerned with the on-the-fly transition from one continuous query plan to a semantically equivalent yet more efficient plan. Migration is important for ...
132
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SIGMOD
2009
ACM
15 years 9 months ago
2009
ACM
Commercial database systems expose query hints to fix poor plans produced by the query optimizer. However, current query hints are not flexible enough to deal with a variety of no...
104
Voted
BTW
2003
Springer
15 years 2 months ago
2003
Springer
Abstract: Optimization of nested queries, in particular finding equivalent “flattened” queries for queries that employ the SQL sub-query construct, has been researched extensiv...