Spake Paul M Foster on Sunday, April 04, 2004 at 03:37PM -0400:
> On Fri, Apr 02, 2004 at 10:35:40PM -0500, wchast@utilpart.com wrote:
>
> > This is really new territory for me (I am a radio guy) I am going to
> > do some AVL work, I need to capture data into a database, that data
> > will be read into mapping machines in order to track the vehicles.
> >
> > I see that I have available two database products on my RedHat machines,
> > MySQL and PostGRES.
> >
>
> MySQL and PostgreSQL have been moving closer in capabilities and speed
> over the years. I believe the primary difference at this point is that
> if you intend do certain commercial things with MySQL, you have to pay
> for a license. I'm not clear on what types of things, and I could be
> wrong entirely. I ran across this some time ago, and for that reason, I
> use PostgreSQL. It has no encumberances whatsoever.
>
(most of ) MySQL is GPL'd, I believe.
However, MySQL AB makes money by selling licenses
that all you to make proprietary changes to it.
http://www.mysql.com/doc/C/o/Copyright.html:
"All the MySQL-specific source in the server,
the mysqlclient library and the client, as well as the
GNU readline library is covered by the GNU General Public License.
See section G GNU General Public License. The text of this license
can be found as the file `COPYING' in the distribution."
http://www.mysql.com/doc/en/MySQL_licenses.html
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