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» Fuzzy queries and relational databases
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CLEIEJ
2006
142views more  CLEIEJ 2006»
13 years 7 months ago
About the Performance of SQLf Evaluation Mechanisms
In order to make more flexible database access the query language SQLf has been previously proposed. One of the SQLf features is the use of Fuzzy Quantifiers in Having Clause. For...
Yosmar Lopez, Leonid Tineo
VLDB
2005
ACM
185views Database» more  VLDB 2005»
14 years 7 months ago
Storing and querying XML data using denormalized relational databases
XML database systems emerge as a result of the acceptance of the XML data model. Recent works have followed the promising approach of building XML database management systems on un...
Andrey Balmin, Yannis Papakonstantinou
SIGMOD
2001
ACM
146views Database» more  SIGMOD 2001»
14 years 7 months ago
On Supporting Containment Queries in Relational Database Management Systems
Virtually all proposals for querying XML include a class of query we term "containment queries". It is also clear that in the foreseeable future, a substantial amount of...
Chun Zhang, Jeffrey F. Naughton, David J. DeWitt, ...
GVD
2009
125views Database» more  GVD 2009»
13 years 5 months ago
A quantum logic-based query processing approach for extending relational query languages
Evaluating a traditional database query against a data tuple returns a true on match and a false on mismatch. Unfortunately, there are many application scenarios where such an eva...
Sebastian Lehrack
CAISE
2006
Springer
13 years 11 months ago
VisAVis: An Approach to an Intermediate Layer between Ontologies and Relational Database Contents
This paper introduces an approach to mapping relational database contents to ontologies. The current effort is motivated by the need of including into the Semantic Web volumes of w...
Nikolaos Konstantinou, Dimitrios-Emmanuel Spanos, ...