Source System in SAP BW


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All systems that provide the SAP Business Information Warehouse with data are described as source systems. 
 
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èThese are as below:
l*SAP systems 
 
l*SAP Business Information Warehouse systems,
 
l*Flat files, through which metadata is manually maintained, and transferred into BW by using a  file interface, 
 
l*A database management system into which data is loaded from a database supported by   SAP, using DB Connect and not an external extraction program. 
 
l*External systems, in which data and metadata is transferred using staging BAPIs.

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