COL: A Logic-Based Language for Complex Objects.
Serge AbiteboulStéphane GrumbachPublished in: EDBT (1988)
Keyphrases
- complex objects
- database programming language
- relational calculus
- relational model
- object identity
- relational algebra
- nested relations
- object representations
- multiple range images
- multiple inheritance
- computationally simple
- programming language
- query language
- database query languages
- natural language
- distance function
- cad cam
- invariant recognition
- knowledge representation