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» On the Decidability of Consistent Query Answering
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MOBIHOC
2009
ACM
14 years 9 months ago
Secure multidimensional range queries in sensor networks
Most future large-scale sensor networks are expected to follow a two-tier architecture which consists of resource-rich master nodes at the upper tier and resource-poor sensor node...
Rui Zhang, Jing Shi, Yanchao Zhang
ISCI
2006
145views more  ISCI 2006»
13 years 8 months ago
Processing count queries over event streams at multiple time granularities
Management and analysis of streaming data has become crucial with its applications in web, sensor data, network traffic data, and stock market. Data streams consist of mostly nume...
Aykut Ünal, Yücel Saygin, Özgü...
ICDE
2004
IEEE
90views Database» more  ICDE 2004»
14 years 10 months ago
Multiresolution Indexing of XML for Frequent Queries
XML and other types of semi-structured data are typically represented by a labeled directed graph. To speed up path expression queries over the graph, a variety of structural inde...
Hao He, Jun Yang 0001
IS
2006
13 years 8 months ago
Processing approximate aggregate queries in wireless sensor networks
In-network data aggregation has been recently proposed as an effective means to reduce the number of messages exchanged in wireless sensor networks. Nodes of the network form an a...
Antonios Deligiannakis, Yannis Kotidis, Nick Rouss...
CORR
2002
Springer
135views Education» more  CORR 2002»
13 years 8 months ago
Minimal-Change Integrity Maintenance Using Tuple Deletions
We address the problem of minimal-change integrity maintenance in the context of integrity constraints in relational databases. We assume that integrity-restoration actions are li...
Jan Chomicki, Jerzy Marcinkowski