A Cobol copybook does not have the relations format. When it's parsed through the PowerCenter, this video explains,
1) How to generate the normalized view of the source
2) And, how to populate the data (mapping design).
How to find in which host the Repository Integration service is running in a multi node domain
How to unassign services from an expired key and assign them to a valid key in 9.1.0 and 9.5.1
Converting and adding of a self signed certificate to use a Webservice Consumer transformation