[EMAIL PROTECTED] wrote:
>  "*manual* orm mapping" , I mean doing the sql manually. 
> I think a generalized ORM layer isn't really needed unless youre going
> to do lots of throwaway  databases, as you might need for some
> user  feedback  handling public  web site , which from  interview movie
> posted earlier,  is what django was for ,  some mass media/ interactive 
> advertising
> web site .

Perhaps, although personally I think that the future lies in
"meta-applications", in which a great deal about how an application
behaves and works is "soft-coded" or otherwise specified by
non-programmers. In such meta-applications, use of a generalised ORM
layer for everything, or for as much as possible, is highly desirable.

>       Wonder if these ORMs do  database versioning well e.g.
> you change your object definitions, and  it generates   ALTER TABLE
> statements to match.

Sure - see http://erosson.com/migrate/ for the SQLalchemy ORM used in
Django and TurboGears.

Tim C

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