Data Integration
Data integration comprises three major processes that, when correctly implemented, permit data to be accessed and made accessible to an array of ETL and analysis tools and data warehousing environment:
Data access (i.e., the ability to access and extract data from any data source),
Data federation (i.e., the integration of business views across multiple data stores), and
Change capture (i.e., based on the indentification, cpature, and delivery of the changes made to enterprise data sources).