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» Practical Investigation of Constraints with Graph Views
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CP
2000
Springer
11 years 9 months ago
Practical Investigation of Constraints with Graph Views
Combinatorial problems can be ef´Čüciently tackled with constraint programming systems. The main tasks of the development of a constraint-based application are modeling the proble...
Tobias Müller
PODS
2003
ACM
142views Database» more  PODS 2003»
12 years 5 months ago
Query containment and rewriting using views for regular path queries under constraints
In this paper we consider general path constraints for semistructured databases. Our general constraints do not suffer from the limitations of the path constraints previously stud...
Gösta Grahne, Alex Thomo
AMW
2010
11 years 6 months ago
Minimising RDF Graphs under Rules and Constraints Revisited
Based on practical observations on rule-based inference on RDF data, we study the problem of redundancy elimination in RDF in the presence of rules (in the form of Datalog rules) a...
Reinhard Pichler, Axel Polleres, Sebastian Skritek...
RR
2010
Springer
11 years 3 months ago
Redundancy Elimination on RDF Graphs in the Presence of Rules, Constraints, and Queries
Based on practical observations on rule-based inference on RDF data, we study the problem of redundancy elimination on RDF graphs in the presence of rules (in the form of Datalog r...
Reinhard Pichler, Axel Polleres, Sebastian Skritek...
CP
2009
Springer
12 years 6 months ago
Same-Relation Constraints
The ALLDIFFERENT constraint was one of the first global constraints [17] and it enforces the conjunction of one binary constraint, the not-equal constraint, for every pair of varia...
Christopher Jefferson, Karen E. Petrie, Meinolf Se...
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