Keyphrases
- relational algebra
- relational model
- expressive power
- query language
- relational database systems
- normal form
- data model
- relational calculus
- complex objects
- first order logic
- relational data model
- join operator
- relational databases
- relational operators
- transitive closure
- algebraic operations
- database
- recursive queries
- databases
- data integration
- sql queries
- database design
- decision support
- aggregate functions
- expert systems
- artificial intelligence
- data mining
- summary tables