On mapping natural language constructs into relational algebra through E-R representation.
Frank S. C. TsengArbee L. P. ChenWei-Pang YangPublished in: Data Knowl. Eng. (1992)
Keyphrases
- relational algebra
- data manipulation
- language constructs
- query language
- relational model
- relational data model
- data model
- expressive power
- relational database systems
- normal form
- database technology
- relational calculus
- complex objects
- transitive closure
- database systems
- first order logic
- spatial databases
- relational schema
- data processing
- relational databases