[postgis-users] ESRI Geodatabases, relationship classes and PostGIS

Juan Declet reguerete at gmail.com
Tue Jul 29 09:47:22 PDT 2008

Can anyone suggest a workaround? I am trying to implement relationship
classes from a Personal Geodatabase into PostGIS. What about if I created
the relationship classes natively in the PostGIS database server? The issue
then would be getting ArcMap to recognize the relationship classes and
enforce them via editing. I know this is more of an ArcGIS question, but am
lookin for the input of experienced PostGIS users.

On Tue, Jul 29, 2008 at 9:34 AM, Lee Hachadoorian <
lee.hachadoorian at gmail.com> wrote:

> Yes, ArcCatalog creates a standard Access database table, but enforces
> the creation of a unique index called OBJECTID (which is not, however,
> actually a primary key).  So what Regina describes should work.
> There's an ogr2ogr cheatsheet at BostonGIS
> (http://www.bostongis.com/?content_name=ogr_cheatsheet).
> I'm not sure about the relationship classes question, although my
> suspicion is that the conversion works table-by-table on data (spatial
> and non-spatial) only.  Since the relationship classes are not stored
> in the feature class or non-spatial table itself (they are stored in a
> table called GDB_RelClasses), I suspect that ogr2ogr will not do
> anything to convert them.  Can someone confirm?
> --
> Lee Hachadoorian
> PhD Student, Geography
> Program in Earth & Environmental Sciences
> CUNY Graduate Center
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> postgis-users at postgis.refractions.net
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