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» Chase of Recursive Queries
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TKDE
2010
152views more  TKDE 2010»
13 years 5 months ago
Maintaining Recursive Views of Regions and Connectivity in Networks
— The data management community has recently begun to consider declarative network routing and distributed acquisition: e.g., sensor networks that execute queries about contiguou...
Mengmeng Liu, Nicholas E. Taylor, Wenchao Zhou, Za...
VLDB
1989
ACM
137views Database» more  VLDB 1989»
13 years 11 months ago
Pasta-3's Graphical Query Language: Direct Manipulation, Cooperative Queries, Full Expressive Power
Graphical Direct Manipulation (GrDM) query languagesare characterized and positioned with respect to traditional textual query languages. After a brief survey of the current state...
Michel Kuntz, Rainer Melchert
ICDE
2000
IEEE
120views Database» more  ICDE 2000»
14 years 8 months ago
Query Planning with Limited Source Capabilities
In information-integration systems, sources may have diverse and limited query capabilities. In this paper we show that because sources have restrictions on retrieving their infor...
Chen Li, Edward Y. Chang
ICDT
2009
ACM
119views Database» more  ICDT 2009»
14 years 8 months ago
Querying data sources that export infinite sets of views
We study the problem of querying data sources that accept only a limited set of queries, such as sources accessible by Web services which can implement very large (potentially inf...
Bogdan Cautis, Alin Deutsch, Nicola Onose
ER
2008
Springer
110views Database» more  ER 2008»
13 years 9 months ago
Conjunctive Query Containment under Access Limitations
Access limitations may occur when querying data sources over the web or heterogeneous data sources presented as relational tables: this happens, for instance, in Data Exchange and ...
Andrea Calì, Davide Martinenghi