Right, that's Direct Connect, but in my opinion that is still SDE in
between ..... though not in the form of an application server.
Best regards,
Bart
Paul Ramsey schreef:
Indeed, it looks like there was a form of low-level time support that
must have been built in the academic research days... it only survived
into the 6.X series:
http://www.postgresql.org/docs/6.3/static/c0503.htm
As the page notes, you can do historical information storage with
triggers pretty easily. This is distinct, however, from "versioning"
as understood by ESRI, which is a form of branch-and-merge operation.
P.
On 8-Feb-08, at 8:55 AM, Chris Hermansen wrote:
Postgres (not PostgreSQL) had a kind of versioning built-in; it was
called "time travel".
I believe that time travel was supported at one time in PostgreSQL, too,
and there is some contributed stuff laying about in the PostgreSQL
install that would indicate it's still do-able.
dnrg wrote:
In order to do this, you may need some interchange
software developed - for instance, if you have to do
any "traditional cartography", how will you proceed?
By converting your data to shapefile and then using
ArcView? How will you maintain / update your
data? Using QGIS, or will you have to buy say some
kind of plugin software component for Arc*** so that
you can edit the PostGIS spatial data?
ESRI tells me that, at the ArcGIS Desktop release 9.3,
you'll be able to edit PostGIS data as core
functionality. No SDE required. This will open doors
and minds I hope. Paul, any comments on that?
At ArcGIS Desktop 9.2, evidently, you can already edit
PostGIS data using the Interoperability extension.
Paul, will PostGIS ever have versioning functionality
for editing workflows similar to ArcSDE? Guess that
would pervert the data, and then PostGIS would "own"
the data in a way like ArcSDE does presently. Still,
many shops find versioning valuable for workflows.
Not sure how I feel about versioning. Just curious how
PostGIS developers feel about it--if it's in the
development roadmap / pipeline or not. And if not, why
not.
Dana
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Regards,
Chris Hermansen · mailto:[EMAIL PROTECTED]
tel:+1.604.714.2878 · fax:+1.604.733.0631
Timberline Natural Resource Group · http://www.timberline.ca
401 · 958 West 8th Avenue · Vancouver BC · Canada · V5Z 1E5
C'est ma façon de parler.
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Bart van den Eijnden
OSGIS, Open Source GIS
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