Keyphrases
- semi structured data
- xml documents
- structured data
- tree structured data
- semi structured
- web mining
- xml data
- unordered trees
- graph databases
- mining frequent
- databases
- web data
- semi structured information
- xml schema
- heterogeneous data
- graph matching
- data sources
- data integration
- knowledge discovery
- recursive queries
- relational databases
- ordered trees
- database
- graph mining
- relational data