Keyphrases
- relational model
- relational databases
- data model
- database technology
- relational algebra
- complex objects
- functional dependencies
- data modeling
- incomplete information
- relational database systems
- spatial databases
- nested relations
- database
- conceptual model
- databases
- database design
- database systems
- database management systems
- data integration
- normal form
- data management
- distributed systems
- graphical models
- domain specific
- query language
- relational calculus
- relational models
- database query languages