Semantics and Expressive Power of Subqueries and Aggregates in SPARQL 1.1.
Mark KaminskiEgor V. KostylevBernardo Cuenca GrauPublished in: WWW (2016)
Keyphrases
- expressive power
- relational algebra
- aggregate functions
- sparql queries
- query language
- relational calculus
- database query languages
- disjunctive datalog
- computational properties
- first order logic
- data model
- query optimization
- relational database systems
- transitive closure
- relational data model
- data complexity
- recursive queries
- rdf data
- relational query languages
- relational model
- query evaluation
- database
- sql queries
- xml data
- rdf graphs
- semantic web
- databases
- database queries
- regular expressions
- database management systems
- data streams