Towards Equivalences for Federated SPARQL Queries.
Carlos Buil ArandaAxel PolleresPublished in: AMW (2014)
Keyphrases
- sparql queries
- relational algebra
- query language
- relational model
- expressive power
- data model
- normal form
- rewriting rules
- relational database systems
- query optimization
- graph model
- first order logic
- rdf data
- data sources
- complex objects
- cost model
- connected components
- query formulation
- relational databases
- query evaluation
- functional dependencies