Keyphrases
- class hierarchies
- database objects
- xml data
- object oriented
- database
- xml schema
- data model
- xml documents
- databases
- hierarchical data
- semistructured data
- decision trees
- xml trees
- rooted trees
- object model
- information retrieval
- complex objects
- relational databases
- database schema
- xml files
- document centric
- data transformation
- markup language
- tree patterns
- semi structured data
- data retrieval
- labeling scheme
- xpath queries
- xml queries
- xml databases
- object oriented databases
- data types
- d objects
- query language
- schema matching
- conceptual schema
- data exchange
- tree structured data
- native xml databases
- query processing
- moving objects
- referential integrity
- document type definitions