418 search results - page 43 / 84 » Optimizing Large Join Queries in Mediation Systems |
DAWAK
2005
Springer
14 years 1 months ago
2005
Springer
This paper proposes the compression of data in Relational Database Management Systems (RDBMS) using existing text compression algorithms. Although the technique proposed is general...
CORR
2011
Springer
13 years 2 months ago
2011
Springer
Index tuning, i.e., selecting the indexes appropriate for a workload, is a crucial problem in database system tuning. In this paper, we solve index tuning for large problem instan...
ICDCS
2005
IEEE
14 years 1 months ago
2005
IEEE
Database queries, in particular, event-driven continuous queries, are useful for many pervasive computing applications, such as video surveillance. In order to enable these applic...
IPPS
2007
IEEE
14 years 2 months ago
2007
IEEE
We study efficient query processing in distributed web search engines with global index organization. The main performance bottleneck in this case is due to the large amount of i...
ICDT
1995
ACM
13 years 11 months ago
1995
ACM
A tuple t1 of relation R subsumes tuple t2 of R, with respect to a query Q if for every database, tuple t1 derives all, and possibly more, answers to query Q than derived by tuple ...