R: Re: [OSGeo-Discuss] Info about OSGEO community and OS GIS products
sossiodisa at virgilio.it
Tue Jul 21 05:54:55 PDT 2009
Hi Renè and thanks for your response.
Relatively to Catalogue, I mean a tool that permits the definition of some types of object (for examples Telco Objects) and relationships between ones. Does Geonetwork permits to do this?
Relatively to User Authentication I mean, for example, a screenshot that appears before any operation is done on Quantum GIS: is it possible?
Thank you so much for your support.
Da: ahugenerd at gmail.com
Data: 9-giu-2009 1.18 PM
A: "Sossio D'Isa"<sossiodisa at virgilio.it>, "OSGeo Discussions"<discuss at lists.osgeo.org>
Ogg: Re: [OSGeo-Discuss] Info about OSGEO community and OS GIS products
I'll reply to your questions in order:
1. I'm unaware of any such products, you'd probably have to combine
multiple programs and libraries or "roll your own".
2. Same thing. I don't think there are specific telco meetings but you
are welcome to go to OS GIS meetings and discuss telecom applications.
3. From what I can see PostgreSQL handles concurrency in a variety of
ways: you can explicitly lock tables, you can perform you can define
transaction isolation levels and you can do versioning. More information
4. Catalogues do exist. GeoNetwork would be an example of a metadata
5. I'm not sure at what level you are talking about. Do you mean user
authentication at an web application level or at a lower level? In the
case of web apps, MapBender supports user authentication. At the DB
level PostgreSQL supports multi-user databases with particular roles for
6. Open source licenses are free as in speech as well as free as in
beer. However, you cannot just take an open source product and integrate
it into a closed source product and sell the whole lot as your own
closed source product. Open source requires, generally speaking,
redistribution of source code for any product that uses it. There are,
of course, a variety of licenses with different restrictions. You might
want to look at: GPL (versions 2 and 3), LGPL, MIT Licenses, BSD
Licenses and the CreativeCommons licenses. These are all used, to
varying degrees, in the open source community and imply various levels
of restrictions. Wikipedia has a fair deal of information on all of these.
Hope this helps,
René A. Enguehard
Sossio D'Isa a écrit :
> Hello to everybody,
> I need some info about OSGEO community and OS GIS
> 1 - Do specific OS GIS products for telco applications
> 2 - Do you know some community meetings about OS GIS products
> for telco applications?
> 3 - How concurrency is generally managed? For
> example, if two
> or more users use a QGIS application running on
> PostGIS instance, how concurrency is managed?
> ESRI products use
> 4 - Does any catalogue exist? In other words, do exist any
> tool for defining some kind of objects, symbols and
> between ones?
> 5 - Does any product for user authentication and user
> role definition exist?
> 6 - Are OS GIS product completely license
> Thank you so much for your supprt.
> Discuss mailing list
> Discuss at lists.osgeo.org
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