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» Optimizing Monitoring Queries over Distributed Data
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ER
2008
Springer
110views Database» more  ER 2008»
15 years 8 months ago
Conjunctive Query Containment under Access Limitations
Access limitations may occur when querying data sources over the web or heterogeneous data sources presented as relational tables: this happens, for instance, in Data Exchange and ...
Andrea Calì, Davide Martinenghi
ISCC
2006
IEEE
188views Communications» more  ISCC 2006»
16 years 13 days ago
Active Learning Driven Data Acquisition for Sensor Networks
Online monitoring of a physical phenomenon over a geographical area is a popular application of sensor networks. Networks representative of this class of applications are typicall...
Anish Muttreja, Anand Raghunathan, Srivaths Ravi, ...
BTW
2007
Springer
154views Database» more  BTW 2007»
16 years 18 days ago
Integrating Query-Feedback Based Statistics into Informix Dynamic Server
: Statistics that accurately describe the distribution of data values in the columns of relational tables are essential for effective query optimization in a database management sy...
Alexander Behm, Volker Markl, Peter J. Haas, Kesha...
CIKM
2010
Springer
15 years 5 months ago
Brown dwarf: a P2P data-warehousing system
In this demonstration we present the Brown Dwarf, a distributed system designed to efficiently store, query and update multidimensional data. Deployed on any number of commodity ...
Katerina Doka, Dimitrios Tsoumakos, Nectarios Kozi...
VLDB
2002
ACM
97views Database» more  VLDB 2002»
15 years 6 months ago
Structural Function Inlining Technique for Structurally Recursive XML Queries
Structurally recursive XML queries are an important query class that follows the structure of XML data. At present, it is difficult for XQuery to type and optimize structurally re...
Chang-Won Park, Jun-Ki Min, Chin-Wan Chung