6004 search results - page 451 / 1201 » Parallelizing query optimization |
175
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SEBD
2008
15 years 8 months ago
2008
d Abstract) Daniele Braga1 , Diego Calvanese2 , Alessandro Campi1 , Stefano Ceri1 , Florian Daniel1 , Davide Martinenghi1 , Paolo Merialdo3 , Riccardo Torlone3 1 Dip. di Elettronic...
211
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GEOINFO
2003
15 years 8 months ago
2003
Relational index structures, as for instance the Relational Interval Tree, the Relational R-Tree, or the Linear Quadtree, support efficient processing of queries on top of existing...
185
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IJCAI
2003
15 years 8 months ago
2003
In data-integration systems, information sources often have various constraints such as “all houses stored at a source have a unique address.” These constraints are very usefu...
223
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DKE
2010
15 years 7 months ago
2010
We describe the Consistency Extractor System (ConsEx) that computes consistent answers to Datalog queries with negation posed to relational databases that may be inconsistent with...
245
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ICDCS
2011
IEEE
14 years 6 months ago
2011
IEEE
— MapReduce has become an effective approach to big data analytics in large cluster systems, where SQL-like queries play important roles to interface between users and systems. H...