2228 search results - page 77 / 446 » A System for Semantic Query Optimization |
CIKM
1994
Springer
14 years 1 months ago
1994
Springer
The rapid advances in computer and communication technologies, and their merger, is leading to a global information market place. It will consist of federations of very large numb...
ISI
2008
Springer
13 years 9 months ago
2008
Springer
In this paper, we propose managing data summaries in unstructured P2P systems. Our summaries are intelligible views with two main virtues. First, they can be directly queried and u...
DPD
2002
13 years 9 months ago
2002
A major cost in executing queries in a distributed database system is the data transfer cost incurred in transferring relations (fragments) accessed by a query from different sites...
SSDBM
2008
IEEE
14 years 3 months ago
2008
IEEE
We propose an automatic method for modeling a relational database that uses SQL triggers and foreign-keys to efficiently answer positive semantic queries about ground instances for...
PVLDB
2008
13 years 8 months ago
2008
Many commercial RDBMSs employ cost-based query optimization exploiting dynamic programming (DP) to efficiently generate the optimal query execution plan. However, optimization tim...