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» A Method for Secure Query Processing in Mobile Databases
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ADBIS
1998
Springer
100views Database» more  ADBIS 1998»
15 years 1 months ago
Multiple Range Query Optimization in Spatial Databases
In order to answer efficiently range queries in 2-d R-trees, first we sort queries by means of a space filling curve, then we group them together, and finally pass them for process...
Apostolos Papadopoulos, Yannis Manolopoulos
SIGMOD
2002
ACM
172views Database» more  SIGMOD 2002»
15 years 9 months ago
Automating physical database design in a parallel database
Physical database design is important for query performance in a shared-nothing parallel database system, in which data is horizontally partitioned among multiple independent node...
Jun Rao, Chun Zhang, Nimrod Megiddo, Guy M. Lohman
VLDB
2006
ACM
490views Database» more  VLDB 2006»
16 years 9 months ago
The New Casper: Query Processing for Location Services without Compromising Privacy
This paper tackles a major privacy concern in current location-based services where users have to continuously report their locations to the database server in order to obtain the ...
Mohamed F. Mokbel, Chi-Yin Chow, Walid G. Aref
ICDE
2008
IEEE
182views Database» more  ICDE 2008»
15 years 11 months ago
SpaceTwist: Managing the Trade-Offs Among Location Privacy, Query Performance, and Query Accuracy in Mobile Services
In a mobile service scenario, users query a server for nearby points of interest but they may not want to disclose their locations to the service. Intuitively, location privacy may...
Man Lung Yiu, Christian S. Jensen, Xuegang Huang, ...
TKDE
2008
234views more  TKDE 2008»
14 years 9 months ago
Probabilistic Group Nearest Neighbor Queries in Uncertain Databases
The importance of query processing over uncertain data has recently arisen due to its wide usage in many real-world applications. In the context of uncertain databases, previous wo...
Xiang Lian, Lei Chen 0002