Query Answering under Expressive Entity-Relationship Schemata.
Andrea CalìGeorg GottlobAndreas PierisPublished in: ER (2010)
Keyphrases
- query answering
- entity relationship
- database schema
- integrity constraints
- conceptual schema
- functional dependencies
- data exchange
- data integration
- schema mappings
- tight complexity bounds
- object oriented
- conjunctive queries
- data model
- data complexity
- database design
- relational model
- relational databases
- answering queries
- normal form
- incomplete information
- conceptual modeling
- data management
- conceptual model
- data sources
- database systems
- domain knowledge
- conceptual models
- data analysis
- databases
- user interface
- xml documents
- business intelligence
- xml data