Keyphrases
- xml documents
- xml data
- relational databases
- structured data
- data model
- xml databases
- xml queries
- relational data
- xml schema
- structured documents
- integrity constraints
- xml information retrieval
- content and structure
- keyword search
- semantic information
- neural network
- bitmap indexing
- labeling scheme
- xpath queries
- decision trees
- sql queries
- program slicing