Approximating query answering on RDF databases.
Hai HuangChengfei LiuXiaofang ZhouPublished in: World Wide Web (2012)
Keyphrases
- query answering
- databases
- data integration
- data integration systems
- data exchange
- data sources
- conjunctive queries
- data model
- inconsistent databases
- data complexity
- integrity constraints
- incomplete information
- answering queries
- database
- metadata
- ontology mappings
- query rewriting
- ontology languages
- dl lite
- linked data
- relational databases
- database systems
- complexity of query answering
- schema mappings
- data warehouse
- data management
- formal semantics
- query relaxation
- datalog programs
- web databases
- tuple generating dependencies
- structured data
- ontology based data access
- semantic web
- xml data exchange