Keyphrases
- spatial relations
- d objects
- query language
- databases
- relational databases
- database management
- database
- data types
- database objects
- data objects
- relational model
- back end
- database design
- relational algebra
- topological relations
- ibm db
- object types
- database access
- relational structures
- similar objects
- relational database systems
- object model
- object segmentation
- cd rom
- sql server