Keyphrases
- database language
- data model
- programming language
- relational databases
- query optimization
- database systems
- associative search
- relational learning
- relational model
- natural language
- language learning
- multidatabase systems
- statistical relational learning
- xml query languages
- algebraic operations
- relational data
- data sources
- language processing
- transaction management
- relational calculus
- aggregate functions
- rewriting rules
- multidatabase environment
- high level