Where is the old value and New value fields getting stored in the Oracle HCM database schema?

Summary:

I want to fetch the old value and new value field in the BIP and want to know where they are stored in the backend schema?

Content (please ensure you mask any confidential information):

Here's the image for the field from person management of OHCM:

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):