🚀 go-pugleaf

This is a general translation question rather than a specific 
Builder question but what better place to ask!

We have a system that is accessed from the UK, Germany, France, 
Spain, Holland and Belgium.  The app is an ActiveX control 
hosted via Internet Explorer.  No problems so far, the ActiveX 
can be internationalised using the standard Builder tools and 
the client can see the application screens in their native 
language.

However, everybody uses the same database via one or more 
Application Servers.  My question is, 

The 'data' that the users see can only be stored in one language
so how do we cope with German users wanting to enter German
language data, French users wanting to enter French language
data, etc.  As these users see the screens in their native
language they naturally want to enter data in their native 
language.  But everybody has access to all of this data.

Is there a standard approach to this problem?

Thanks for any advice,

Andy