What is 'after-image' in SAP EIM-DS - Data Services?

after-image - Overview

• Component: EIM-DS

• Component Name: Data Services

• Description: The values in an UPDATE row after the row changes, used for log-based changed-data capture CDC jobs.

after-image - Details

• 
  Key Concepts: 
  After-image is a feature of SAP EIM-DS Data Services that allows users to compare the data before and after a transformation. It stores a copy of the data before it is changed, allowing users to easily identify any discrepancies between the original and the transformed data. 
  
  How to use it: 
  To use after-image, users must first enable it in the Data Services Designer. This can be done by selecting the “Enable After-Image” option in the Transformation Properties window. Once enabled, Data Services will store a copy of the data before it is changed. This copy can then be used to compare the original and transformed data. 
  
  Tips & Tricks: 
  When using after-image, it is important to remember that it only stores a copy of the data before it is changed. It does not store any information about how the data was changed or what transformations were applied. Therefore, users should always keep track of their transformations in order to properly compare the original and transformed data. 
  
  Related Information: 
  For more information on after-image, please refer to SAP’s official documentation on EIM-DS Data Services. Additionally, there are many online tutorials and videos available that provide step-by-step instructions on how to use after-image in Data Services.