Hi Chris

I don't have an answer but beside Magma I suggest you to also have a closer
look at Postgres and GOODS (for which we have clients in Squeak).

Interesting might be Postgis, http://postgis.refractions.net/, an add on to
Postgres, implementing  a geographic datatype with R-Tree indicices for
contained-in selects...

GOODS: http://minnow.cc.gatech.edu/squeak/3492

I don't know the GIS domain but probably one more important item in your
list is how fast you can access and search your data. OODBMS such as Magma
or GOODS may perform much worse than Postgres (with domain specific
enhancements like Postgis) for searches. On the other hand, with OODBs you
don't have to deal with mapping data between two different worlds.


Cheers,
Adrian


Chris Burkert wrote:
> Hi Squeakers,
>
> I want to use squeak for a GIS (GeoInformationSystem) and I like to
> know which DBS (DataBaseSystem) would you prefer for storing large
> amounts of objects (many GigaByte).
>
> I have several goals:
> - keep the footprint of the image small
> - separate image and (data-)objects
>    -> I even want to put image and DBS on different computers
> - keep the objects, even after a crash
>    -> backups
> - allow access by multiple users over a secure path
>    -> transactions, authentication and authorization, SSL or equal
> - don't pay money for a DBS
>    -> this should be a free project
>
> I have looked at the DBSs at http://minnow.cc.gatech.edu/squeak/512
> and I have the imppression that all the DBSs, that are free, stable
> and supported, fail in one of the goals above.
>
> The most promising for this task seems to be Magma ... what do you
> think?
>
> thanks for any hint
>
> all the best
>             Chris Burkert

_____________________
Adrian Lienhard
www.adrian-lienhard.ch
www.netstyle.ch