Optimising Conjunctive Queries on a Relational Interface to CODASYL DBMS.
S. W. HoPublished in: BNCOD (1982)
Keyphrases
- conjunctive queries
- data model
- query language
- query evaluation
- relational queries
- query answering
- integrity constraints
- data complexity
- np complete
- data exchange
- query processing
- database management systems
- database systems
- query containment
- special case
- database
- data integration
- data types
- database schema
- query rewriting
- conjunctive regular path queries
- probabilistic databases
- data management
- relational model
- databases
- xml data
- relational data
- relational databases
- tuple generating dependencies
- bounded treewidth
- decision procedures
- object oriented
- containment of conjunctive queries
- object relational
- deductive databases
- relational learning
- dl lite
- datalog programs
- expressive power
- queries using views
- schema mappings