On 23/11/2016 11:35, Ivan Přenosil wrote:
> Another example - when the table field uses user defined domain, the 
> same domain will be used by view.
> When I alter the table field by changing it to use another wider domain, 
> the view will retain the original narrow domain.
>
Yes.

Another approach than change views domains automatically when changing a
dependent table, is to work with views and computed fields without
needing a domain.

Which will break tools wanting to know views structure.

And that shows another necessity. Having the system tables as a very low
level thing and have virtual tables for the user to access.

Virtual RDB$RELATIONS may show to the user the view's columns types.


Adriano


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