Spatial Data Base Queries: Relational Algebra versus Computational Geometry.
Robert LauriniFrançoise MilleretPublished in: SSDBM (1988)
Keyphrases
- relational algebra
- query language
- computational geometry
- relational calculus
- relational operators
- database query languages
- expressive power
- data model
- relational database systems
- probabilistic databases
- relational model
- database
- relational data model
- query evaluation
- computer graphics
- aggregate functions
- normal form
- complex objects
- spatial data
- recursive queries
- null values
- transitive closure
- voronoi diagram
- relational databases
- first order logic
- object oriented
- convex hull
- databases
- spatial databases
- conceptual model
- user defined
- summary tables
- type checking
- computer vision
- data warehousing
- xml data