6974 search results - page 362 / 1395 » Querying Semi-Structured Data |
142
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VLDB
2005
ACM
16 years 8 days ago
2005
ACM
In this demonstration, we describe a system for storing and querying faceted hierarchies. We have developed a general faceted domain model and a query language for hierarchically ...
182
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COOPIS
2002
IEEE
15 years 11 months ago
2002
IEEE
In this paper we propose a mediator architecture for the querying and integration of Web-accessible XML data sources. Our contributions are (i) the definition of a simple but expr...
186
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RP
2010
Springer
15 years 4 months ago
2010
Springer
Efficient reachability query answering in large directed graphs has been intensively investigated because of its fundamental importance in many application fields such as XML data ...
227
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ODBIS
2007
Springer
16 years 28 days ago
2007
Springer
Abstract. RDF Schema (RDFS) extends RDF with a schema vocabulary with a predefined semantics. Evaluating queries which involve this vocabulary is challenging, and there is not yet...
165
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DAWAK
2003
Springer
16 years 14 hour ago
2003
Springer
Abstract. Many SQL queries with aggregated subqueries exhibit redundancy (overlap in FROM and WHERE clauses). We propose a method, called the for-loop, to optimize such queries by ...