Relational Algebra Operations and Sizes of Relations.
Danièle GardyClaude PuechPublished in: ICALP (1984)
Keyphrases
- type checking
- relational calculus
- relational algebra
- database query languages
- duplicate elimination
- algebraic operations
- expressive power
- relational model
- query language
- relational data model
- aggregate functions
- relational database systems
- data model
- abstract data types
- complex objects
- normal form
- first order logic
- transitive closure
- relational operators
- relational algebra expressions
- artificial intelligence
- data types
- database
- join operations
- null values
- data sources