> As I have mention some of the problem due to both methods I proposed,
> I wish to aim to build a system that could keep everything web-based
> and at the same time process the source data on the user's computer
> instead of send large source file(such as the dbf) back to the server
> for process.
I think that sending huge files to the server just to do simple
processing is not a good solution. Maybe you should think
about a kind of browser plugin, applet, XUL etc. Maybe something
quite different like sharing database (dbf) between users or some
kind of data replication at the DBMS level?
> Just as you said, I could make an application for windows users,
> but I really want to keep everything web based and be multi-plateform.
With Python you may be multi-platform even without web based solutions.
Look at wxPython for example.
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