From Conjunctive Queries to SPARQL Queries in Ontology-Mediated Querying.
Cristina FeierCarsten LutzFrank WolterPublished in: Description Logics (2018)
Keyphrases
- conjunctive queries
- sparql queries
- query language
- rdf data
- query evaluation
- semantic web
- relational algebra
- data model
- conceptual model
- expressive power
- query answering
- regular expressions
- database
- complex objects
- integrity constraints
- query optimization
- graph model
- knowledge base
- rdf graphs
- domain ontology
- xml data
- np complete
- query processing
- knowledge representation
- query interface
- data exchange
- graph patterns
- cost model
- object oriented
- special case
- graph databases
- linked data
- data integration
- databases