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» Querying Communities in Relational Databases
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SARA
2007
Springer
15 years 5 months ago
Reformulation for Extensional Reasoning
Relational databases have had great industrial success in computer science. The power of the paradigm is made clear both by its widespread adoption and by theoretical analysis. Tod...
Timothy L. Hinrichs, Michael R. Genesereth
DEXA
1995
Springer
125views Database» more  DEXA 1995»
15 years 2 months ago
An SQL Extension Supporting User Viewpoints
- In order to accomplish independence on the logical data organization, a relational DBMS must be capable of interpreting query language sentences which reference attributes belong...
Giuseppe Bellavia, Dario Maio, Stefano Rizzi
PODS
2009
ACM
134views Database» more  PODS 2009»
15 years 11 months ago
Equivalence of nested queries with mixed semantics
We consider the problem of deciding query equivalence for a conjunctive language in which queries output complex objects composed from a mixture of nested, unordered collection ty...
David DeHaan
DEXAW
2008
IEEE
145views Database» more  DEXAW 2008»
15 years 24 days ago
ECQ: A Simple Query Language for the Semantic Web
With the increasing development of real applications using Semantic Web Technologies, it is necessary to provide scalable and efficient ontology querying and reasoning systems. In ...
María del Mar Roldán García, ...
SIGMOD
2007
ACM
122views Database» more  SIGMOD 2007»
15 years 11 months ago
XQuery layers
XML is the data interoperability standard in many application domains. Therefore, an increasing number of researchers and professionals, who are not computer scientists (although ...
Daniele Braga, Alessandro Campi, Stefano Ceri, Pao...