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» Optimal location queries in road network databases
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VLDB
2004
ACM
96views Database» more  VLDB 2004»
15 years 5 months ago
Answering XPath Queries over Networks by Sending Minimal Views
When a client submits a set of XPath queries to a XML database on a network, the set of answer sets sent back by the database may include redundancy in two ways: some elements may...
Keishi Tajima, Yoshiki Fukui
ICDE
2005
IEEE
122views Database» more  ICDE 2005»
15 years 6 months ago
A Cost-Space Approach to Distributed Query Optimization in Stream Based Overlays
Abstract— Distributed stream-based applications, such as continuous query systems, have network scale and time characteristics that challenge traditional distributed query optimi...
Jeffrey Shneidman, Peter R. Pietzuch, Matt Welsh, ...
IDEAS
2006
IEEE
180views Database» more  IDEAS 2006»
15 years 6 months ago
SURCH: Distributed Aggregation over Wireless Sensor Networks
In this paper, we present SURCH, a novel decentralized algorithm for efficient processing of queries generated in sensor networks. Unlike existing techniques, SURCH is fully dist...
Xingbo Yu, Sharad Mehrotra, Nalini Venkatasubraman...
SIGMOD
1999
ACM
107views Database» more  SIGMOD 1999»
15 years 4 months ago
Client-Site Query Extensions
We explore the execution of queries with client-site userdefined functions (UDFs). Many UDFs can only be executed at the client site, for reasons of scalability, security, confide...
Tobias Mayr, Praveen Seshadri
ICDE
2007
IEEE
126views Database» more  ICDE 2007»
16 years 1 months ago
QPIAD: Query Processing over Incomplete Autonomous Databases
Incompleteness due to missing attribute values (aka "null values") is very common in autonomous web databases, on which user accesses are usually supported through media...
Hemal Khatri, Jianchun Fan, Yi Chen, Subbarao Kamb...