Keyphrases
- relational databases
- xml documents
- xml data
- xml databases
- relational data
- keyword search
- object oriented
- relational model
- databases
- xml views
- sql queries
- database
- xml schema
- relational database systems
- normal form
- database technology
- functional dependencies
- database schema
- xml queries
- relational database management systems
- xpath queries
- data model
- markup language
- semi structured data
- stored in relational databases
- structured data
- database applications
- metadata
- data dependencies
- information retrieval