Keyphrases
- data model and query language
- query language
- relational databases
- sql queries
- language constructs
- relational data model
- relational model
- database language
- database design
- relational algebra expressions
- relational calculus
- databases
- structured query language
- data types
- semantic relations
- database queries
- database
- natural language
- facial expressions
- database applications
- relational database systems
- relational algebra
- complex objects
- data modeling
- database development
- data manipulation
- cd rom
- visual basic
- database schema
- management system
- database management
- data structure
- spatial relations