Keyphrases
- metadata
- topic maps
- xml documents
- markup language
- interchange format
- xml data
- long term
- databases
- knowledge representation
- content management
- data model
- xml schema
- xml databases
- legal information retrieval
- xml format
- neural network
- data exchange
- digital libraries
- semantic web
- relational databases
- real world
- xml queries
- ontology learning
- object oriented
- extensible markup language
- database