Structural characterizations of schema-mapping languages.
Balder ten CatePhokion G. KolaitisPublished in: Commun. ACM (2010)
Keyphrases
- schema mappings
- data exchange
- data integration
- database schema
- expressive power
- query answering
- high level specifications
- data complexity
- structural information
- high level declarative
- data management
- databases
- conjunctive queries
- finite sets
- schema matching
- xml data exchange
- heterogeneous data
- building blocks
- np complete
- end users
- data sources
- data model
- spatio temporal