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» Containment of Conjunctive Regular Path Queries with Inverse
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KR
2000
Springer
13 years 8 months ago
Containment of Conjunctive Regular Path Queries with Inverse
Diego Calvanese, Giuseppe De Giacomo, Maurizio Len...
DBPL
2001
Springer
115views Database» more  DBPL 2001»
13 years 9 months ago
Optimization Properties for Classes of Conjunctive Regular Path Queries
Abstract. We are interested in the theoretical foundations of the optimization of conjunctive regular path queries (CRPQs). The basic problem here is deciding query containment bot...
Alin Deutsch, Val Tannen
PODS
2004
ACM
131views Database» more  PODS 2004»
14 years 5 months ago
On the Decidability of Containment of Recursive Datalog Queries - Preliminary report
The problem of deciding query containment has important applications in classical query optimization and heterogeneous database systems. Query containment is undecidable for unres...
Piero A. Bonatti
PODS
1998
ACM
94views Database» more  PODS 1998»
13 years 9 months ago
Query Containment for Conjunctive Queries with Regular Expressions
Daniela Florescu, Alon Y. Levy, Dan Suciu
PODS
2010
ACM
213views Database» more  PODS 2010»
13 years 10 months ago
Expressive languages for path queries over graph-structured data
For many problems arising in the setting of graph querying (such as finding semantic associations in RDF graphs, exact and approximate pattern matching, sequence alignment, etc.)...
Pablo Barceló, Carlos A. Hurtado, Leonid Li...