[GRASS5] Layers Clarification

[Moritz Lennert]

Radim Blazek wrote:
> On 3/6/06, twiens <twiens at interbaun.com> wrote:
> 
>>>The possibility to keep in a database the relation between
>>>geometry objects in a map and more tables/records was
>>>considered during the development of  GRASS 6.0. It does
>>>not appear to be better solutin because all the geometry
>>>processing is done in files. Example:  Say that we have
>>>one layer with 2 loverlapping lines linked to 2 records in
>>>one table.
>>>            1
>>>+-----------------------+        2
>>>                +-------------------------+
>>>
>>>Now we want to clean data and remove the duplicated part,
>>>we run v.clean tool=break,rmdupl result (in current
>>>implementation):
>>>         1          1,2       2
>>> +--------------+--------+----------------+
>>>
>>
>>Are you indicating by this example that within a single
>>layer a geographic object can have more than one link to a
>>table, or is the result of this operation two layers?
> 
> 
> More links to a table.

I mùust be very dense, but then what does this have to do with layers ? 
Everything you do above is in one layer, or ?

Moritz