With the understanding that we would loose the ability to properly
track the sate of a mapped object and ability to update or insert in
ORM and likely the ability to correctly use relationships as well -
how can one accomplish a mapper, which would work on tables (views)
without any key, which uniquely identify records in it?

The rationale for this question is to be able to be able to operate on
these tables in object (ORM) context and to join them in queries with
other normally mapped classes for reading purposes only. The ideal
solution would be perhaps a different Declarative Base class using a
modified mapper.

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