Containment of Schema Mappings for Data Exchange (Preliminary Report).
Andrea CalìRiccardo TorlonePublished in: CoRR (2013)
Keyphrases
- data exchange
- schema mappings
- conjunctive queries
- unions of conjunctive queries
- query answering
- query containment
- data integration
- database schema
- data management
- data complexity
- xml schema
- regular path queries
- high level specifications
- query rewriting
- xml data exchange
- finite sets
- answering queries
- xml queries
- query evaluation
- data model
- structural similarity
- transitive closure
- databases
- data warehouse
- data sources
- inconsistent databases
- logical equivalence
- relational databases