Keyphrases
- xml documents
- xml data
- relational databases
- data model
- xml databases
- special issue
- xml queries
- semi structured data
- integrity constraints
- digital libraries
- xml schema
- semantic information
- relational data
- xml information retrieval
- structured documents
- structured data
- multi dimensional
- bulletin board
- keyword search
- document collections
- web pages
- xpath queries
- data mining
- document structure
- content and structure
- electronic documents
- design automation
- database