[From SQLServer Performance]
This article is part 2 of a 4 part series that introduces SQL Server Integration Services (SSIS). This article shows how to use the Data Flow Task in SSIS.
Data Flow
The Data Flow Task (DFT), using the SSIS Pipeline engine, manage the flow of data from the data source adapters to the data destination adapters and let the user do the necessary transformations, clean, and modify data in the way.
The article continues at
http://www.sql-server-performance.com/articles/biz/SSIS_Introduction_Part2_p1.aspx