g'day some more.
This time about table-inheritance, 3 levels - C inherits B inherits A, 
and A.linkA references to B (and subclasses).

It is possible that something is wrong in the way i'm defining 
these... the B'part of the polymunions is according to your advice 
some time ago, to avoid duplicating id columns.

adios
svil

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Attachment: sa_gentestbase.py
Description: application/python

Attachment: tinh-ref-polym-ABC.py
Description: application/python

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