305 search results - page 32 / 61 » Including Group-By in Query Optimization |
WISE
2007
Springer
14 years 1 months ago
2007
Springer
We study and present our findings on two closely related problems on xpath rewriting using views when both the view and the query are tree patterns involving /,// and []. First, g...
DOCENG
2004
ACM
14 years 1 months ago
2004
ACM
With the wide adoption of XML as a standard data representation and exchange format, querying XML documents becomes increasingly important. However, relational database systems co...
ICDE
2003
IEEE
14 years 9 months ago
2003
IEEE
We present a query architecture in which join operators are decomposed into their constituent data structures (State Modules, or SteMs), and dataflow among these SteMs is managed ...
SIGCOMM
2005
ACM
14 years 1 months ago
2005
ACM
The Internet’s core routing infrastructure, while arguably robust and efficient, has proven to be difficult to evolve to accommodate the needs of new applications. Prior researc...
CLEF
2005
Springer
14 years 1 months ago
2005
Springer
This paper reports results for the University of Maryland’s participation in CLEF-2005 Cross-Language Speech Retrieval track. Techniques that were tried include: (1) document ex...