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Re: License for PostgreSQL for commercial purpose

From: Doug Quale <quale1(at)charter(dot)net>
To: pgsql-admin(at)postgresql(dot)org
Subject: Re: License for PostgreSQL for commercial purpose
Date: 2004-03-26 19:32:22
Message-ID: 87ekrf8kvt.fsf@charter.net (view raw or flat)
Thread:
Lists: pgsql-admin
Radu-Adrian Popescu <radu(dot)popescu(at)aldratech(dot)com> writes:

> Doug Quale wrote:
>
> | The Postgres license is a free software license that is GPL
> | compatible.
> 
> Where GPL compatible means (possibly among other things) that I can get
> a BSD-licensed Postgresql and turn it into a GPL-licensed MyPostgresql ?

Absolutely.  This has been done.  For example, GNU bison was derived
many years ago from Berkeley yacc.

You can go further and make a non-free MyPostgresql.  Use Postgres
code in a completely proprietary project if you like.  The X11 license
places far fewer restrictions on code than does the GPL.  Works
derived from X11-licensed code do not have to be free.

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