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Definition

Data that logically belongs together is stored in the source system in the form of DataSources.

A DataSource consists of a quantity of fields that are offered for data transfer into BW. The DataSource is technically based on the fields of the Extraction Structure. By defining a DataSource, these fields can be enhanced as well as hidden (or filtered) for the data transfer.

It also describes the properties of the extractor belonging to it with regard to the data transfer into BW. During replication, the properties of the DataSource relevant to BW are made known in BW.

Integration

DataSources are used for extracting data from an SAP source system and for transferring data into the BW. DataSources make the source system data available on request to the BW in the form of the (if necessary, filtered and enhanced) extraction structure. In DataSource maintenance in the BW, you determine which fields from the DataSource are actually transferred. Data is transferred in the BW input layer, the Persistent Staging Area (PSA). In the transformation, you determine how the fields of the are assigned to the BW InfoObjects. Data transfer processes facilitate the further distribution of data from the PSA to other targets. The rules that you set in the transformation are applied here.