Querying Data Exchange Settings Beyond Positive Queries.
Marco CalauttiSergio GrecoHebatalla HammadTariq MahmoodCristian MolinaroIrina TrubitsynaPublished in: SEBD (2023)
Keyphrases
- data exchange
- query answering
- xml data exchange
- query language
- unions of conjunctive queries
- answering queries
- query processing
- data integration
- data integration systems
- data management
- schema mappings
- issues arise
- conjunctive queries
- query answers
- open world
- query evaluation
- query containment
- database
- integrity constraints
- data sources
- closed world
- databases
- xml queries
- expressive power
- data model
- regular path queries
- tuple generating dependencies
- data complexity
- rdf data
- query interface
- xml schema
- lingua franca
- query rewriting
- database schema
- logic programs
- object oriented
- database systems