SAP BW Extractor
An extractor is the program in SAP ERP which can be activated to prepare and capture the data through an extract structure for transfer to BW. The extractor can be the result of a standard DataSource or a custom built DataSource. It can describe a full load or a delta load process of different types.
The data transfer section of the program is remotely called from SAP BW. When the extractor is a delta type, it also runs to populate the delta queue with new and changed records. The data transfer remote call then transfers the data to SAP BW.