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» Optimizing complex queries with multiple relation instances
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CISM
1993
149views GIS» more  CISM 1993»
13 years 11 months ago
The Weak Instance Model
The weak instance model is a framework to consider the relations in a database as a whole, regardless of the way attributes are grouped in the individual relations. Queries and upd...
Paolo Atzeni, Riccardo Torlone
ICDE
2000
IEEE
113views Database» more  ICDE 2000»
13 years 12 months ago
Web Query Optimizer
We consider an architecture of mediators and wrappers for Internet accessible WebSources of limited query capability. Each call to a source is a WebSource Implementation (WSI) and...
Vladimir Zadorozhny, Laura Bright, Louiqa Raschid,...
SIGMOD
2010
ACM
171views Database» more  SIGMOD 2010»
14 years 9 days ago
Variance aware optimization of parameterized queries
Parameterized queries are commonly used in database applications. In a parameterized query, the same SQL statement is potentially executed multiple times with different parameter ...
Surajit Chaudhuri, Hongrae Lee, Vivek R. Narasayya
ADBIS
2007
Springer
171views Database» more  ADBIS 2007»
14 years 1 months ago
Quete: Ontology-Based Query System for Distributed Sources
The exponential growth of the web and the extended use of database management systems in widely distributed information systems has brought to the fore the need for seamless interc...
Haridimos Kondylakis, Anastasia Analyti, Dimitris ...
INFOVIS
1999
IEEE
13 years 11 months ago
Efficient Multi-Object Dynamic Query Histograms
Dynamic Queries offer continuous feedback during range queries, and have been shown to be effective and satisfying. Recent work has extended them to datasets of 100,000 objects an...
Mark Derthick, James Harrison, Andrew Moore, Steve...