Stage Rows is data flow component for the OLE DB destination. For the purposes of packages that perform ETL, the OLE DB destination is a Blackbaud Data Warehouse database staging table. For more information about OLE DB, see Microsoft's MSDN article at Microsoft OLE DB.
When you double-click the Stage Rowsdata flow component from the Data Flow view of the package, the OLE DB Destination Editor screen appears.
On the mappings page of the OLE DB Destination Editor, you can establish the mappings between the OLTP tables and the destination BBDW database staging tables.