Keyphrases
- data model
- query language
- data types
- databases
- data integration
- database systems
- data modeling
- relational model
- database integration
- database
- object model
- object oriented
- database management systems
- relational algebra
- semistructured data
- data sources
- xml documents
- conceptual model
- lower bound
- multiscale
- real world
- entity relationship
- schema evolution
- neural network