Keyphrases
- data sources
- data integration
- data model
- information integration
- information sources
- data sets
- integrating heterogeneous
- multiple data sources
- databases
- unstructured text
- distributed data sources
- real world
- structured data
- data warehouse
- data collections
- multiple sources
- heterogeneous data
- semantic relationships
- labor intensive
- relational data
- disparate data sources
- materialized views
- relational database systems
- deep web
- error prone
- semi automatic
- data integration systems
- text mining
- web services