6650 search results - page 652 / 1330 » Mutating database queries |
309
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SIGMOD
2009
ACM
16 years 7 months ago
2009
ACM
Uncertain data arises in a number of domains, including data integration and sensor networks. Top-k queries that rank results according to some user-defined score are an important...
205
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ICDE
2005
IEEE
16 years 25 days ago
2005
IEEE
Various index structures have been proposed to speed up the evaluation of XML path expressions. However, existing XML path indices suffer from at least one of three limitations: ...
210
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ICDE
2010
IEEE
16 years 16 days ago
2010
IEEE
— In recent years, the research community introduced various methods for processing skyline queries in multidimensional databases. The skyline operator retrieves all objects bein...
225
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DBPL
1993
Springer
15 years 11 months ago
1993
Springer
In this paper we study the expressive power of query languages for nested bags. We de ne the ambient bag language by generalizing the constructs of the relational language of Brea...
200
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AAAI
2008
15 years 9 months ago
2008
In several applications of logic programming and Transaction Logic, such as, planning, trust management and independent Semantic Web Services, an action might produce incomplete f...