796 search results - page 13 / 160 » A Formalization of ODMG Queries |
ECAI
2000
Springer
15 years 4 months ago
2000
Springer
In this paper, we study unsatisfiable queries posed to a mediator in an information integration system and expressed in the logical formalism of the information integration system...
106
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FOIKS
2006
Springer
15 years 3 months ago
2006
Springer
Abstract. We present here a formal foundation for an iterative and incremental approach to constructing and evaluating preference queries. Our main focus is on query modification: ...
100
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TMRA
2005
Springer
15 years 5 months ago
2005
Springer
Abstract. This paper describes a query algebra for tolog, a query language for Topic Maps inspired by Prolog and very similar to Datalog. The language is based on binding variables...
207
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AMW
2011
14 years 3 months ago
2011
Subqueries are a poweful feature which allows to enforce reuse, composition, rewriting and optimization in a query language. In this paper we perform a comprehensive study of the i...
110
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SAC
2011
ACM
14 years 2 months ago
2011
ACM
Spatial networks like transportation, power, and pipeline networks are a ubiquitous spatial concept in everyday life and play an important role for navigational and routing purpos...