1654 search results - page 172 / 331 » Ontology Based Query Processing in Database Management Syste... |
153
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CIKM
2005
Springer
15 years 9 months ago
2005
Springer
Modern query optimizers select an efficient join ordering for a physical execution plan based essentially on the average join selectivity factors among the referenced tables. In ...
200
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SIGMOD
2007
ACM
16 years 4 months ago
2007
ACM
Commercial enterprise data warehouses are typically implemented on parallel databases due to the inherent scalability and performance limitation of a serial architecture. Queries ...
218
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SIGMOD
2009
ACM
16 years 4 months ago
2009
ACM
In order to enable extensibility, modern query optimizers typically leverage a transformation rule based framework. Testing individual rule correctness as well as correctness of r...
135
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CIKM
1999
Springer
15 years 8 months ago
1999
Springer
We present the architecture and a performance assessment of an extensible query optimizer written in Venus. Venus is a general-purpose active-database rule language embedded in C+...
179
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AC
1992
Springer
15 years 8 months ago
1992
Springer
Logic and databases have gone a long way together since the advent of relational databases. Already the rst basic query languages for relational databases beside relational algebra...