Keyphrases
- database
- relational databases
- user interface
- data model
- relational data
- databases
- relational calculus
- graphical interface
- entity relationship
- friendly interface
- visual interface
- query language
- machine learning
- relational algebra
- digital libraries
- multi relational
- interface design
- human computer interface
- database systems
- artificial intelligence
- relational operators
- data sets