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INFSOF
2000
92views more  INFSOF 2000»
14 years 11 months ago
Identifying relevant constraints for semantic query optimization
Semantic query optimization is the process of utilizing information implied by integrity constraints to reformulate the query into one that generates the same set of answers in a ...
Sang-goo Lee, Lawrence J. Henschen, Jonghun Chun, ...
MDM
2010
Springer
281views Communications» more  MDM 2010»
15 years 1 months ago
Efficient Evaluation of k-Range Nearest Neighbor Queries in Road Networks
A k-Range Nearest Neighbor (or kRNN for short) query in road networks finds the k nearest neighbors of every point on the road segments within a given query region based on the net...
Jie Bao 0003, Chi-Yin Chow, Mohamed F. Mokbel, Wei...
PVLDB
2010
118views more  PVLDB 2010»
14 years 9 months ago
Ten Thousand SQLs: Parallel Keyword Queries Computing
Keyword search in relational databases has been extensively studied. Given a relational database, a keyword query finds a set of interconnected tuple structures connected by fore...
Lu Qin, Jefferey Yu, Lijun Chang
EPEW
2008
Springer
15 years 1 months ago
State-Aware Performance Analysis with eXtended Stochastic Probes
We define a mechanism for specifying performance queries which combine instantaneous observations of model states and finite sequences of observations of model activities. We reali...
Allan Clark, Stephen Gilmore
DBVIS
1993
101views Database» more  DBVIS 1993»
15 years 3 months ago
Using Visualization to Support Data Mining of Large Existing Databases
In this paper, we present ideas how visualization technology can be used to improve the difficult process of querying very large databases. With our VisDB system, we try to provid...
Daniel A. Keim, Hans-Peter Kriegel