I am not sure the question is clear. Are you asking where you can find documentation about the database tables?
There is no such documentation as best I know.
If you are asking about the configuration files and the .cfg, .udb, and .rdb, you can see examples in the client tool installation.
You can also see documentation on our online bookshelf regarding the structure of the files.
Have a look at File Types - CA Identity Governance - 14.0 - CA Technologies Documentation
It should provide what you are looking for.