Solutions and query rewriting in data exchange.
Marcelo ArenasPablo BarcelóRonald FaginLeonid LibkinPublished in: Inf. Comput. (2013)
Keyphrases
- data warehouse
- data exchange
- query rewriting
- data integration
- query answering
- data management
- conjunctive queries
- data warehousing
- schema mappings
- xml queries
- business intelligence
- databases
- heterogeneous data
- data mining
- dl lite
- data complexity
- answering queries
- integrity constraints
- optimal solution
- xml schema
- database schema
- query containment
- query optimization
- database systems
- data model
- database
- query evaluation
- special case
- np complete
- unions of conjunctive queries