Keyphrases
- databases
- path expressions
- xml data
- xml documents
- database
- knowledge discovery
- relational databases
- data model
- semi structured data
- xml queries
- object oriented databases
- complex objects
- text mining
- data warehouse
- database applications
- regular expressions
- relational database systems
- database systems
- data integration
- query processing
- data sources
- cost model
- sql queries
- xpath queries