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Definition

All systems that provide the SAP Business Information Warehouse with data are described as source systems. These can be:

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       1.      SAP systems

       2.      SAP Business Information Warehouse systems,

       3.      Flat files, through which metadata is manually maintained, and transferred into BW by using a file interface,

       4.      A database management system into which data is loaded from a database supported by SAP, using DB Connect and not an external extraction program.

       5.      External systems, in which data and metadata is transferred using staging BAPIs.

Use the Create function in the source system tree of the Administrator Workbench to specify the type of source system.

Integration

DataSources are responsible for extracting and staging data from source systems. The DataSources subdivide the data that is provided by a source system into self-contained business areas.

In SAP source systems, the DataSources are assigned to applications, for example HR (Human Resources). The advantage here is that you are able to specifically access data evaluation for this application.

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The information required for the extraction process, that is, the BW-relevant properties of the DataSource, is replicated in the BW by comparing metadata.