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» Structural Recursion as a Query Language
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ICDT
2010
ACM
194views Database» more  ICDT 2010»
13 years 9 months ago
Bag Equivalence of XPath Queries
When a query is evaluated under bag semantics, each answer is returned as many times as it has derivations. Bag semantics has long been recognized as important, especially when ag...
Sara Cohen, Yaacov Y. Weiss
FLOPS
2008
Springer
13 years 9 months ago
Formalizing a Constraint Deductive Database Language Based on Hereditary Harrop Formulas with Negation
In this paper, we present an extension of the scheme HH(C) (Hereditary Harrop formulas with Constraints) with a suitable formulation of negation in order to obtain a constraint ded...
Susana Nieva, Jaime Sánchez-Hernánde...
ADC
2009
Springer
123views Database» more  ADC 2009»
14 years 2 months ago
S.E.A.L. - A Query Language for Entity-Association Queries
The paper presents the S.E.A.L. query language and interpreter for entity-association queries that allows such queries to be expressed in a much simpler way than in SQL. S.E.A.L (...
Edward Stanley, Pavle Mogin, Peter Andreae
W3C
1998
13 years 9 months ago
Query Languages Workshop Position Paper
This paper discusses the use of XML in conjunction with a variety of repositories and database systems, and outlines some of the requirements for an effective query language. Many...
Noah Mendelsohn
CORR
2004
Springer
82views Education» more  CORR 2004»
13 years 7 months ago
Schema-based Scheduling of Event Processors and Buffer Minimization for Queries on Structured Data Streams
We introduce an extension of the XQuery language, FluX, that supports event-based query processing and the conscious handling of main memory buffers. Purely event-based queries of...
Christoph Koch, Stefanie Scherzinger, Nicole Schwe...