418 search results - page 38 / 84 » Optimizing Large Join Queries in Mediation Systems |
VLDB
2007
ACM
14 years 8 months ago
2007
ACM
We investigate the problem of how to evaluate efficiently a collection of shortest path queries on massive graphs that are too big to fit in the main memory. To evaluate a shortes...
ICDE
2001
IEEE
14 years 9 months ago
2001
IEEE
We propose to extend database systems by a Skyline operation. This operation filters out a set of interesting points from a potentially large set of data points. A point is intere...
DASFAA
2005
IEEE
14 years 1 months ago
2005
IEEE
Peer-to-peer (P2P) computing is gaining more and more significance due to its widespread use currently and potential deployments in future applications. In this paper, we propose ...
VLDB
2005
ACM
14 years 1 months ago
2005
ACM
Developing cost models for query optimization is significantly harder for XML queries than for traditional relational queries. The reason is that XML query operators are much mor...
SIGMOD
2007
ACM
14 years 7 months ago
2007
ACM
A lot of research has been conducted by the database community on methods and techniques for efficient XPath processing, with great success. Despite the progress made, significant...