[GRASS-dev] modifying the dblink it require to re-build the topology

[Moritz Lennert]

On 12/11/13 23:24, Pietro Zambelli wrote:
> On Tuesday 12 Nov 2013 20:37:24 you wrote:

>>> On the other hand, the tables are already there, we need only to
>>> link the geometry features to the existing table.
>>
>> No, if we have a new map it should use a different attribute table
>> than the old map.
>
> I don't agree I prefer to avoid to have several copy of the same thing
> on my hard-disk, but I can understand your logic. :-)

It's not about redundancy, but about the fact that when you have two 
maps (the old and the new) linked to the same table you will have 
conflicts to resolve. Normally GRASS erases the table linked to a map 
when that map is erased. So, if you link the new map to the old table 
and then erase the old map, you might lose all your attribute data...

Moritz