Can I limit the back-up data in wallet.dat? I want to know is it possible to back-up manually from wallet.dat. I am running Dogecoin daemon locally.

Scenario:


say user (user1) have some dogecoin balance in addr1  
another user (user2) have dogecoin balance in addr2
I want to back-up only user2 not user1


Is there any way to limit the back-up data in wallet.dat file?
No, this is not possible without custom software or a lot of extra work. The wallet.dat file contains all the private keys, and the reference client doesn't have a way to split it up.