Keyphrases
- fixed order
- xml documents
- data model
- xml data
- xml databases
- query language
- data types
- database design
- xml queries
- relational databases
- xml schema
- data integration
- object oriented
- structured data
- relational model
- xml information retrieval
- integrity constraints
- semi structured
- databases
- database management systems
- relational data
- functional dependencies
- semantic information
- data sources
- keyword search
- document collections
- relational algebra
- semistructured data
- xpath queries
- path expressions
- schema evolution
- document structure
- xml format
- data structure
- database