Extending relational algebra to handle bipolarity.
Patrick BoscOlivier PivertAmine MokhtariLudovic LiétardPublished in: SAC (2010)
Keyphrases
- relational algebra
- expressive power
- relational model
- query language
- normal form
- data model
- relational database systems
- complex objects
- relational calculus
- first order logic
- relational databases
- relational operators
- transitive closure
- join operator
- relational data model
- algebraic operations
- database query languages
- incomplete information
- recursive queries