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. Regards, Sossio ----Messaggio originale---- Da: ahugen...@gmail.com Data: 9-giu-2009 1.18 PM A: "Sossio D'Isa"<sossiod...@virgilio.it>, "OSGeo Discussions"<firstname.lastname@example.org> Ogg: Re: [OSGeo-Discuss] Info about OSGEO community and OS GIS products Hi Sossio, 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 at: http://www.postgresql.org/docs/8.1/interactive/mvcc.html 4. Catalogues do exist. GeoNetwork would be an example of a metadata catalogue. 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 each user. 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 > products: > > 1 - Do specific OS GIS products for telco applications > exist? > > 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 > Versioning. > > 4 - Does any catalogue exist? In other words, do exist any > tool for defining some kind of objects, symbols and > relationships > between ones? > > 5 - Does any product for user authentication and user > role definition exist? > > 6 - Are OS GIS product completely license > free? > > Thank you so much for your supprt. > > Regards, > > Sossio > > _______________________________________________ > Discuss mailing list > Discuss@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/discuss >
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