Composing schema mappings: Second-order dependencies to the rescue.
Ronald FaginPhokion G. KolaitisLucian PopaWang Chiew TanPublished in: ACM Trans. Database Syst. (2005)
Keyphrases
- schema mappings
- data exchange
- source to target tgds
- finite sets
- data integration
- inclusion dependencies
- tuple generating dependencies
- database schema
- target schema
- query answering
- source schema
- xml schema
- high level specifications
- source to target tuple generating dependencies
- schema evolution
- data complexity
- xml data exchange
- data dependencies
- conjunctive queries
- data sources
- fixed point
- decision support