Scott Marlowe wrote:
On Tue, 2005-03-08 at 09:06, Shelby Cain wrote:
--- Howard Cole <howard.cole@xxxxxxxxxxxxx> wrote:
Although not appropriate for a speed comparison, you
might want to note
that the use of Mysql versions 4.0 upward now
require commercial license
for clients, which are no longer LGPL, whereas
Postgres is free (BSD
license). This makes transactions per dollar an
interesting statistic
when comparing the Postgres and MySql!
Reading over their site that doesn't appear true for
every case. The client libraries are under the GPL
and thus any application that links to them would also
be covered under the GPL. No commercial license is
required unless the terms of the GPL (ie: if you
distribute a binary to someone you must also be
willing to distribute your source code if asked) a
problem.
There have been some statements from MySQL in the past that implied they
might be taking a narrower view of what "distribution" meant than what
the GPL was saying. Also, it was impossible for PHP to be packaged with
MySQL libs due to incompatibilities with the GPL'd mysql connection
libs. It seems MySQL AB has clarified both on these pages:
http://www.mysql.com/company/legal/licensing/
http://www.mysql.com/company/legal/licensing/foss-exception.html
http://www.mysql.com/company/legal/licensing/faq.html
The real issue is that the GPL requires that derivative works are also
covered under the GPL or compatible license. IANAL, but I don't think
anyone in their right mind wants to ask the courts whether a work which
might or might not be (f. ex. links to a GPL'd library) is a derivative
work.
Best Wishes,
Chris Travers
Metatron Technology Consulting
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