Flat implementation of a nested relational algebra closed under a subclass of permutable nested relations.
Martin DolezykU. WiebkingPublished in: Relational Databases and their Extensions (1988)
Keyphrases
- nested relations
- relational algebra
- normal form
- relational model
- complex objects
- query language
- data model
- expressive power
- relational calculus
- relational databases
- relational database systems
- information content
- first order logic
- database technology
- transitive closure
- null values
- database design
- xml databases
- recursive queries
- aggregate functions