A Flat File source is a data flow component that uses metadata defined by a Flat File connection manager.
Add a Flat File source component
- To open the Data Flow designer, either double-click on the Extract Sample Currency Data data flow task, or select the Data Flow tab.
 
- In the SSIS Toolbox, expand OtherSources, and then drag a Flat File Source onto the design surface of the Data Flow tab.
 
- On the Data Flow design surface, right-click the newly added Flat File Source, select Rename, and change the name to Extract Sample Currency Data.
 
- Double-click the Flat File source to open the Flat File Source Editor dialog.
 - In the Flat file connection manager field, select Sample Flat File Source Data.
 
- Select Columns and verify that the names of the columns are correct.
 
- Select OK.
 - Right-click the Flat File source and select Properties.
 
- In the Properties window, verify that the LocaleID property is set to English (United States).
 
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