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VLDB
1990
ACM
128views Database» more  VLDB 1990»
14 years 1 months ago
Advanced Query Processing in Object Bases Using Access Support Relations
Even though the large body of knowledge of relational query optimization techniques can be utilized as a starting point for object-oriented query optimization the full exploitatio...
Alfons Kemper, Guido Moerkotte
FUIN
2006
139views more  FUIN 2006»
13 years 9 months ago
Efficient Parallel Query Processing by Graph Ranking
In this paper we deal with the problem of finding an optimal query execution plan in database systems. We improve the analysis of a polynomial-time approximation algorithm due to M...
Dariusz Dereniowski, Marek Kubale
ICDE
2008
IEEE
127views Database» more  ICDE 2008»
14 years 10 months ago
Efficient Processing of Top-k Queries in Uncertain Databases
This work introduces novel polynomial algorithms for processing top-k queries in uncertain databases under the generally adopted model of x-relations. An x-relation consists of a n...
Ke Yi, Feifei Li, George Kollios, Divesh Srivastav...
ICDE
2006
IEEE
126views Database» more  ICDE 2006»
14 years 10 months ago
Enabling Query Processing on Spatial Networks
A system that enables real time query processing on large spatial networks is demonstrated. The system provides functionality for processing a wide range of spatial queries such a...
Jagan Sankaranarayanan, Houman Alborzi, Hanan Same...
ICDE
2005
IEEE
124views Database» more  ICDE 2005»
14 years 2 months ago
SemCrypt - Ensuring Privacy of Electronic Documents Through Semantic-Based Encrypted Query Processing
The trend towards outsourcing increases the number of documents stored at external service providers. This storage model, however, raises privacy and security concerns because the...
Michael Schrefl, Katharina Grün, Jürgen ...