Query Rewriting and Optimization for Ontological Databases.
Georg GottlobGiorgio OrsiAndreas PierisPublished in: ACM Trans. Database Syst. (2014)
Keyphrases
- query rewriting
- databases
- data integration
- conjunctive queries
- query optimization
- database
- database systems
- query answering
- database applications
- view definitions
- spatial databases
- knowledge representation
- data sources
- relational database systems
- query execution
- xml queries
- heterogeneous data
- data quality
- relational databases
- data representation
- database queries
- computational complexity
- keywords