2228 search results - page 307 / 446 » On Database Theory and XML |
173
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PODS
2004
ACM
16 years 6 months ago
2004
ACM
Unions of conjunctive queries, also known as select-project-join-union queries, are the most frequently asked queries in relational database systems. These queries are definable b...
253
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PODS
2010
ACM
15 years 11 months ago
2010
ACM
Cardinality estimation is the problem of estimating the number of tuples returned by a query; it is a fundamentally important task in data management, used in query optimization, ...
281
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ICDE
2000
IEEE
16 years 7 months ago
2000
IEEE
This paper describes the methodology and the software development of XWRAP, an XML-enabled wrapper construction system for semi-automatic generation of wrapper programs. By XML-ena...
261
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ICDT
2009
ACM
16 years 7 months ago
2009
ACM
The inclusion of Regular Expressions (REs) is the kernel of any type-checking algorithm for XML manipulation languages. XML applications would benefit from the extension of REs wi...
170
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WWW
2008
ACM
16 years 7 months ago
2008
ACM
Recent interests on XML, Semantic Web, and Web ontology, among other topics, have sparked a renewed interest on graph-structured databases. A fundamental query on graphs is the re...