552 search results - page 44 / 111 » On the Complexity of Join Predicates |
ADBIS
2007
Springer
14 years 4 months ago
2007
Springer
The exponential growth of the web and the extended use of database management systems in widely distributed information systems has brought to the fore the need for seamless interc...
DAMON
2007
Springer
14 years 4 months ago
2007
Springer
We propose a general framework for improving the query processing performance on multi-level memory hierarchies. Our motivation is that (1) the memory hierarchy is an important pe...
FORMATS
2008
Springer
13 years 11 months ago
2008
Springer
The common metric temporal logics for continuous time were shown to be insufficient, when it was proved in [7, 12] that they cannot express a modality suggested by Pnueli. Moreover...
SIGMOD
2008
ACM
14 years 10 months ago
2008
ACM
Today's query processing engines do not take advantage of the multiple occurrences of a relation in a query to improve performance. Instead, each instance is treated as a dis...
DASFAA
2008
IEEE
14 years 4 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...