Temporal Query Languages Expressive Power: µTL versus T-WHILE.
Nicole BidoitMatthieu ObjoisPublished in: TIME (2005)
Keyphrases
- expressive power
- query language
- computational properties
- data complexity
- relational algebra
- data model
- transitive closure
- first order logic
- temporal information
- spatio temporal databases
- relational calculus
- regular expressions
- databases
- recursive queries
- temporal databases
- conjunctive queries
- query evaluation
- temporal patterns
- constraint databases
- data integration
- knowledge representation
- database
- relation algebra