A Fully Precise Null Extended Nested Relational Algebra.
Mark LeveneGeorge LoizouPublished in: Fundam. Informaticae (1993)
Keyphrases
- relational algebra
- nested relational
- nested relations
- relational model
- query language
- expressive power
- data model
- normal form
- complex objects
- relational database systems
- relational calculus
- first order logic
- relational databases
- transitive closure
- summary tables
- relational data model
- database
- algebraic operations
- relational operators
- databases
- database design
- database systems
- conceptual model
- object oriented
- data mining
- database query languages