353 search results - page 29 / 71 » Processing Top-k Join Queries |
SIGMOD
2009
ACM
14 years 8 months ago
2009
ACM
The ParAccel Analytic DatabaseTM is a fast shared-nothing parallel relational database system with a columnar orientation, adaptive compression, memory-centric design, and an enha...
DASFAA
2008
IEEE
14 years 2 months ago
2008
IEEE
Twig pattern matching (TPM) is the core operation of XML query processing. Existing approaches rely on either efficient data structures or novel labeling/indexing schemes to reduce...
PVLDB
2010
13 years 6 months ago
2010
Optimization of join queries based on average selectivities is suboptimal in highly correlated databases. In such databases, relations are naturally divided into partitions, each ...
SIGMOD
2000
ACM
13 years 7 months ago
2000
ACM
In this paper we describe XXL (eXtensible and fleXible Library), a toolkit for rapid prototyping query processing algorithms. XXL is a flexible, high-level, platform independent J...
PVLDB
2010
13 years 6 months ago
2010
Ontology-based data access is a powerful form of extending database technology, where a classical extensional database (EDB) is enhanced by an ontology that generates new intensio...