6004 search results - page 185 / 1201 » Parallelizing query optimization |
PVLDB
2010
13 years 8 months ago
2010
In XML search systems twig queries specify predicates on node values and on the structural relationships between nodes, and a key operation is to join individual query node matche...
DAMON
2007
Springer
14 years 4 months ago
2007
Springer
Chip multiprocessors (CMPs) present new opportunities for improving database performance on large queries. Because CMPs often share execution, cache, or bandwidth resources among ...
ICDE
2008
IEEE
14 years 11 months ago
2008
IEEE
In many modern data management settings, data is queried from a central node or nodes, but is stored at remote sources. In such a setting it is common to perform "pushstyle&qu...
MFCS
2009
Springer
14 years 4 months ago
2009
Springer
We study visibly pushdown automata (VPA) models for expressing and evaluating queries, expressed using MSO formulas, on words with a nesting structure (like XML documents). We de�...
GRID
2003
Springer
14 years 3 months ago
2003
Springer
We are developing a grid information service, RGIS, that is based on the relational data model. RGIS supports complex queries written in SQL that search for compositions (using jo...