A Semantics for Complex Objects and Approximate Queries.
Peter BunemanSusan B. DavidsonAaron WattersPublished in: PODS (1988)
Keyphrases
- complex objects
- database query languages
- relational calculus
- query language
- nested relations
- relational algebra
- multiple inheritance
- relational data model
- indexing methods
- path expressions
- object representations
- distance computation
- multiple range images
- relational model
- data model
- query evaluation
- aggregate functions
- query answers
- object identity
- distance function
- expressive power
- invariant recognition
- query processing
- class hierarchies
- type checking
- efficient processing
- range queries
- conceptual model
- training set