Data Extraction and Transformation
A Data Extraction and Transformation Service is
- retrieving data from one or more data source (e.g. RDBMS, Legacy Systems,
Files) based on criteria provided as input to the Service,
- modifying and possibly merging the retrieved data and
- submitting those to post-processing,
like indicated in the following diagram:

Figure: Data Extraction and Transformation Service
The following chapter provides a detailed sample implementations: