2733 search results - page 104 / 547 » The Constellation Query Language |
112
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ESWS
2008
Springer
15 years 4 months ago
2008
Springer
The goal of this paper is to give an overview of the basics of the theory of RDF databases. We provide a formal definition of RDF that includes the features that distinguish this m...
139
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JSC
2010
15 years 28 days ago
2010
We study the problem of deciding whether two ontologies are inseparable w.r.t. a signature Σ, i.e., whether they have the same consequences in the signature Σ. A special case is...
118
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VLDB
1991
ACM
15 years 6 months ago
1991
ACM
We explore the implications of supporting bags (i.e. multisets) in a data model and associated query language, and present some formal results concerned with the algebraic propert...
106
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CLEIEJ
2006
15 years 2 months ago
2006
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...
112
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JASIS
2002
15 years 2 months ago
2002
We consider the recently proposed XQL language, which is designed to query XML documents by content and structure. We show that an already existing model, namely \Proximal Nodes&q...