An Interactive Graphical Manipulation System for Higher Order Objects Based on Relational Algebra.
Hans ZiererGunther SchmidtRudolf BerghammerPublished in: WG (1986)
Keyphrases
- relational algebra
- higher order
- expressive power
- relational model
- query language
- relational calculus
- normal form
- data model
- relational database systems
- first order logic
- algebraic operations
- relational data model
- complex objects
- transitive closure
- recursive queries
- knn
- aggregate functions
- functional dependencies
- machine learning
- similarity search
- nearest neighbor
- xml documents
- data structure