Keyphrases
- topic maps
- xml documents
- information integration
- xml data
- databases
- knowledge base
- markup language
- xml databases
- semantic web
- xml format
- machine processable
- semantic web technologies
- domain ontology
- knowledge representation
- data model
- xml data sources
- formal representation
- xml schema
- xml retrieval
- metadata
- domain specific
- semantic technologies
- ontology mapping
- data sources
- semi structured
- data exchange
- information retrieval systems
- domain knowledge
- ontology languages
- object oriented
- update operations
- search engine
- ontological framework
- database