713 search results - page 2 / 143 » A Learning Optimizer for a Federated Database Management Sys... |
OTM
2005
Springer
13 years 11 months ago
2005
Springer
The maintenance of global integrity constraints in database federations is still a challenge since traditional integrity constraint management techniques cannot be applied to such ...
ICDE
2005
IEEE
13 years 11 months ago
2005
IEEE
Current federated systems deploy cost-based query optimization mechanisms; i.e., the optimizer selects a global query plan with the lowest cost to execute. Thus, cost functions in...
CIDR
2007
13 years 6 months ago
2007
We present a “black-box” approach to estimating query cardinality that has no knowledge of query execution plans and data distribution, yet provides accurate estimates. It doe...
ICALT
2006
IEEE
13 years 11 months ago
2006
IEEE
LIMBS is an open source brokerage system developed in the framework of the CALIBRATE project. LIMBS relies on open standards and open contents to promote exchanges of learning res...
VLDB
1999
ACM
13 years 9 months ago
1999
ACM
An important issue for federated systems of diverse data sources is optimizing cross-source queries, without building knowledge of individual sources into the optimizer. This pape...