These cookbooks can be imported to the Tensei-Data migration system for various data migration tasks.
Simply select the cookbook of your choice and follow the instructions from the README within the folder.
A part of the cookbooks are the DFASDLs (Data Format and Sematic Description Language). Additional DFASDLs are also available in this Github repository.
Tensei-Data is a data migration software. The official website contains additional information and screenshots.