Data Base Sublanguage Founded on the Relational Calculus.
E. F. CoddPublished in: Research Report / RJ / IBM / San Jose, California (1971)
Keyphrases
- relational calculus
- relational algebra
- expressive power
- query language
- complex objects
- relational model
- normal form
- arithmetic constraints
- database
- data model
- relational data model
- structured query language
- first order logic
- relational database systems
- relational databases
- transitive closure
- databases
- database query languages
- fuzzy sets
- object oriented
- high dimensional