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» Constraint Query Languages
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PODS
1999
ACM
151views Database» more  PODS 1999»
13 years 11 months ago
Exact and Approximate Aggregation in Constraint Query
We investigate the problem of how to extend constraint query languages with aggregate operators. We deal with standard relational aggregation, and also with aggregates speci c to ...
Michael Benedikt, Leonid Libkin
ALT
2005
Springer
14 years 4 months ago
Gold-Style and Query Learning Under Various Constraints on the Target Class
In language learning, strong relationships between Gold-style models and query models have recently been observed: in some quite general setting Gold-style learners can be replaced...
Sanjay Jain, Steffen Lange, Sandra Zilles
DASFAA
2005
IEEE
149views Database» more  DASFAA 2005»
14 years 1 months ago
Translate Graphical XML Query Language to SQLX
: Semi-structured data has become more and more attention-getting with the emergence of XML, and it has aroused much enthusiasm for integrating XML and SQL in database community. D...
Wei Ni, Tok Wang Ling
ICDT
1995
ACM
105views Database» more  ICDT 1995»
13 years 11 months ago
Datalog Queries of Set Constraint Databases
Abstract. Extension of the relational database model to represent complex data has been a focus of much research in recent years. At the same time, an alternative extension of the ...
Peter Z. Revesz
DBPL
1999
Springer
122views Database» more  DBPL 1999»
13 years 11 months ago
A Representation Independent Language for Planar Spatial Databases with Euclidean Distance
Linear constraint databases and query languages are appropriate for spatial database applications. Not only the data model is natural to represent a large portion of spatial data s...
Gabriel M. Kuper, Jianwen Su