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BTW
2005
Springer
113views Database» more  BTW 2005»
14 years 1 months ago
A Learning Optimizer for a Federated Database Management System
: Optimizers in modern DBMSs utilize a cost model to choose an efficient query execution plan (QEP) among all possible ones for a given query. The accuracy of the cost estimates de...
Stephan Ewen, Michael Ortega-Binderberger, Volker ...
MOBIDE
2005
ACM
14 years 1 months ago
DAIMON: data integration for a mobile network
We describe the DAIMON system for data integration of nomadic data. DAIMON is based on an extension of the mediator-wrapper architecture, where each node is a mediator of its own ...
Constantinos V. Katsaros, Ioannis L. Niarhos, Vasi...
GIS
2007
ACM
14 years 8 months ago
Partition-based lazy updates for continuous queries over moving objects
Continuous spatial queries posted within an environment of moving objects produce as their results a time-varying set of objects. In the most ambitious case both queries and data ...
Yu-Ling Hsueh, Roger Zimmermann, Haojun Wang, Wei-...
KAIS
2000
139views more  KAIS 2000»
13 years 7 months ago
Incremental View Maintenance for Mobile Databases
In a mobile environment, querying a database at a stationary server from a mobile client is expensive due to the limited bandwidth of a wireless channel and the instability of the ...
Ken C. K. Lee, Hong Va Leong, Antonio Si
PAAMS
2010
Springer
13 years 5 months ago
Agents to Help Context-Aware System in Home Care
Context-aware systems capture information from the attributes located within their surroundings and deal with different ways of interacting with the user in its environment. This p...
Juan A. Fraile, Dante I. Tapia, Jesús A. Ro...