>It's not that your domain is different

You have mixed the posts you are replying to - the domain being different from the database is stipulated here.

I was giving examples of how this typically happens, and the reasons are entirely independent of whether or not an ORM is being used.

I am fully aware that you can handle any mess using an ORM as well, which is why I was surprised at the original claim that ORM's force proper domain models. I haven't observed that so I was genuinely curious.

Separately from that I have to say your suggestions of things to do to force an ORM into the situation are bad ideas. The complexity of custom serialization, various mapping hooks or attributes to bless individual properties will lead to pain and misery down the line.

Just accept the extra layer of DTO's. They're a detour over pure SQL but are at least easy to maintain and hold no surprises. They say there's a special place in hell for people who write SQL triggers and I think people who override ORM serializers are welcome there. ;-)