https://www.ibm.com/docs/en/db2/11.5.x?topic=tables-creating-shadow
Creating a shadow table involves several steps to ensure that the table is in a normal state and has a primary key defined. Shadow tables are materialized...
creating shadowtables
https://www.ibm.com/docs/en/db2/12.1.x?topic=tables-setting-up-replication-infosphere-cdc-management-console
Set up replication for shadow tables with IBM InfoSphere CDC Management Console by creating one subscription for all shadow tables in your database and one...
shadow tablesibm infospheresettingreplicationcdc