SAP BW Transformation

transformation is the program which maps one InfoProvider to another. It is the
core of the ETL in BW, as all data transformations are defined here. InfoObjects
are mapped here, and transformation rules can be defined, if necessary with
ABAP programming. In order to launch a transformation, so that the data is transformed
and loaded from one InfoProvider to another, a Data Transfer Process (DTP) needs
to be launched which is linked to the transformation.