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» Executing Nested Queries

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IJSWIS
2008

135views more IJSWIS 2008»

Efficient Processing of RDF Queries with Nested Optional Graph Patterns in an RDBMS

14 years 9 months ago

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Relational technology has shown to be very useful for scalable Semantic Web data management. Numerous researchers have proposed to use RDBMSs to store and query voluminous RDF dat...

Artem Chebotko, Shiyong Lu, Mustafa Atay, Farshad ...

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DOLAP
2000
ACM

146views Information Technology» more DOLAP 2000»

Comparing Nested GPSJ Queries in Multidimensional Databases

15 years 1 months ago

Download www.cis.drexel.edu

A multidimensional database can be seen as a collection of multidimensional cubes, from which information is usually extracted by aggregation; aggregated data can be calculated ei...

Matteo Golfarelli, Stefano Rizzi

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DMDW
2000

161views Management» more DMDW 2000»

View materialization for nested GPSJ queries

14 years 11 months ago

Download sunsite.informatik.rwth-aachen.de

View materialization is a central issue in logical design of data warehouses since it is one of the most powerful techniques to improve the response to the workload. Most approach...

Matteo Golfarelli, Stefano Rizzi

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FCT
2009
Springer

130views Applied Computing» more FCT 2009»

Earliest Query Answering for Deterministic Nested Word Automata

15 years 4 months ago