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EDBT
2010
ACM
177views Database» more  EDBT 2010»
16 years 1 months ago
Bridging the gap between intensional and extensional query evaluation in probabilistic databases
There are two broad approaches to query evaluation over probabilistic databases: (1) Intensional Methods proceed by manipulating expressions over symbolic events associated with u...
Abhay Jha, Dan Olteanu, Dan Suciu
VLDB
2007
ACM
141views Database» more  VLDB 2007»
16 years 6 months ago
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...
Garrett Wolf, Hemal Khatri, Bhaumik Chokshi, Jianc...
SIGMOD
2007
ACM
186views Database» more  SIGMOD 2007»
16 years 6 months ago
Fg-index: towards verification-free query processing on graph databases
Graphs are prevalently used to model the relationships between objects in various domains. With the increasing usage of graph databases, it has become more and more demanding to e...
James Cheng, Yiping Ke, Wilfred Ng, An Lu
AVI
2000
15 years 7 months ago
A Visual Tool for Querying Geographic Databases
To support users in querying geographic databases we have developed a system that lets people sketch what they are looking for. It closes the gap between user and information syst...
Andreas D. Blaser, Max J. Egenhofer
ICDE
2006
IEEE
155views Database» more  ICDE 2006»
16 years 7 months ago
Answering Imprecise Queries over Autonomous Web Databases
Current approaches for answering queries with imprecise constraints require user-specific distance metrics and importance measures for attributes of interest - metrics that are ha...
Ullas Nambiar, Subbarao Kambhampati