NURQL: a nested universal relation query language.
Mark LeveneGeorge LoizouPublished in: Inf. Syst. (1989)
Keyphrases
- universal relation
- query language
- relational algebra
- nested relations
- expressive power
- data model
- relational database theory
- functional dependencies
- normal form
- relational model
- object oriented
- complex objects
- database
- relational data model
- query evaluation
- transitive closure
- recursive queries
- xml data
- conjunctive queries
- machine learning
- artificial intelligence
- aggregate functions
- user defined
- distance measure
- conceptual model
- integrity constraints
- inclusion dependencies
- first order logic
- data integration