Efficient Evaluation of Expressions in a Relational Algebra.
Robert M. PechererPublished in: ACM Pacific (1975)
Keyphrases
- relational algebra
- query language
- expressive power
- normal form
- relational calculus
- relational model
- relational database systems
- data model
- complex objects
- transitive closure
- relational algebra expressions
- artificial intelligence
- database query languages
- first order logic
- database technology
- algebraic operations
- summary tables
- high level