Using python for a CAD program

[Paddy]

I guess the 'advanced O/R mapping tools' make it easier to map the data
to an RDBMS, but their is still the performance issue. Since this has
degenerated into a an issue of performance then I suggest the original
poster create a clear interface between his data and its persistance
method. This should make it easier to attach another, if his first
choice is not up to it.

- Cheers, Pad.