Keyphrases
- xml schema
- metadata
- xml documents
- schema matching
- xml data
- matching algorithm
- xml queries
- regular expressions
- relational databases
- data exchange
- conceptual schemas
- markup language
- integrity constraints
- conceptual model
- schema mappings
- databases
- data sets
- pattern matching
- data integration
- xml databases
- context free grammars
- relational model
- building blocks
- object oriented
- low level
- conceptual schema
- document centric