Keyphrases
- xml documents
- xml data
- structured data
- xml schema
- xml databases
- relational databases
- xml queries
- integrity constraints
- structured documents
- xml information retrieval
- semantic information
- data model
- querying xml documents
- relational data
- sql queries
- semi structured data
- keyword search
- path expressions
- document structure
- xpath queries
- bitmap indexing
- document type
- data sets
- xml query processing
- multi dimensional
- object oriented
- database systems