Keyphrases
- semi structured
- xml documents
- xml data
- heterogeneous data sources
- data exchange
- xml databases
- data model
- relational databases
- information integration
- data integration
- xml queries
- markup language
- xml format
- metadata
- xml data management
- topic maps
- xpath queries
- data sources
- structured data
- relational data
- xml schema
- object oriented
- data representation
- databases
- xml technology
- content and structure
- keyword search
- information retrieval
- object oriented databases
- semistructured data
- information retrieval systems
- labeling scheme
- open source
- database objects
- data transformation
- document structure
- database systems
- twig queries
- website
- extensible markup language
- document centric
- database