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» Recursive Query Plans for Data Integration
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ICDE
2002
IEEE
128views Database» more  ICDE 2002»
14 years 6 months ago
Efficiently Ordering Query Plans for Data Integration
The goal of a data integration system is to provide a uniform interface to a multitude of data sources. Given a user query formulated in this interface, the system translates it i...
AnHai Doan, Alon Y. Halevy
SIGMOD
2011
ACM
204views Database» more  SIGMOD 2011»
12 years 8 months ago
Datalog and emerging applications: an interactive tutorial
We are witnessing an exciting revival of interest in recursive Datalog queries in a variety of emerging application domains such as data integration, information extraction, netwo...
Shan Shan Huang, Todd Jeffrey Green, Boon Thau Loo
PODS
2000
ACM
137views Database» more  PODS 2000»
13 years 9 months ago
Query Containment for Data Integration Systems
The problem of query containment is fundamental to many aspects of database systems, including query optimization, determining independence of queries from updates, and rewriting ...
Todd D. Millstein, Alon Y. Levy, Marc Friedman
ICDT
2007
ACM
105views Database» more  ICDT 2007»
13 years 11 months ago
Optimization of Query Plans in the presence of Access Limitations
We consider the problem of querying data sources that have limited capabilities and can thus only be accessed by complying with certain binding patterns for their attributes. This ...
Andrea Calì, Diego Calvanese, Davide Martin...
SIGMOD
2004
ACM
122views Database» more  SIGMOD 2004»
14 years 5 months ago
Adapting to Source Properties in Processing Data Integration Queries
An effective query optimizer finds a query plan that exploits the characteristics of the source data. In data integration, little is known in advance about sources' propertie...
Zachary G. Ives, Alon Y. Halevy, Daniel S. Weld