Keyphrases
- relational databases
- xml documents
- xml data
- xml databases
- keyword search
- relational data
- object oriented
- xml schema
- relational model
- databases
- sql queries
- database
- relational database management systems
- xml views
- functional dependencies
- normal form
- information extraction
- relational database systems
- automatic extraction
- xml queries
- database technology
- markup language
- database schema
- data integration
- automatically extracted
- data extraction
- entity relationship
- stored in relational databases
- object oriented databases
- semi structured
- data exchange
- knowledge extraction
- integrity constraints
- keyword queries
- data model
- data mining
- neural network