418 search results - page 40 / 84 » Optimizing Large Join Queries in Mediation Systems |
WISE
2007
Springer
14 years 2 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...
CIKM
2005
Springer
14 years 1 months ago
2005
Springer
In this paper, we propose a new strategy for optimizing the placement of bin boundaries to minimize the cost of query evaluation using bitmap indices with binning. For attributes ...
ICEBE
2005
IEEE
14 years 1 months ago
2005
IEEE
Electronic commerce is emerging as a major application area for database systems. A large number of e-commerce stores provide electronic product catalogs that allow customers to s...
SIGMOD
2007
ACM
14 years 7 months ago
2007
ACM
Two trends are converging to make the CPU cost of a table scan a more important component of database performance. First, table scans are becoming a larger fraction of the query p...
FAST
2009
13 years 5 months ago
2009
The scale of today's storage systems has made it increasingly difficult to find and manage files. To address this, we have developed Spyglass, a file metadata search system t...