Querying Data Exchange Settings Beyond Positive Queries.
Marco CalauttiSergio GrecoCristian MolinaroIrina TrubitsynaPublished in: Theory Pract. Log. Program. (2024)
Keyphrases
- data exchange
- query answering
- xml data exchange
- query language
- unions of conjunctive queries
- query processing
- answering queries
- data integration
- data integration systems
- data management
- schema mappings
- query evaluation
- data model
- conjunctive queries
- databases
- data sources
- tuple generating dependencies
- query rewriting
- issues arise
- query interface
- database
- query containment
- database schema
- xml schema
- open world
- lingua franca
- regular path queries
- transitive closure
- database systems
- case study
- inconsistent databases
- expressive power
- cost model
- similarity search
- logic programs
- closed world
- relational queries
- object oriented
- aggregate queries
- xml queries
- relational algebra