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MySQL Support and Licensing
===========================
This section describes `MySQL' support and licensing arrangements.
Support Offered by MySQL AB
---------------------------
Technical support from `MySQL AB' means individualised answers to your
unique problems direct from the software engineers who code the `MySQL'
database engine.
different commands and utilities to work, remove performance
bottlenecks, restore crashed systems, understand operating system or
networking impacts on `MySQL', set up best practices for backup and
recovery, utilise APIs, and so on. Our support covers only the `MySQL'
server and our own utilities, not third-party products that access the
`MySQL' server, though we try to help with these where we can.
please
contact our sales staff via e-mail at .
Technical support is like life insurance. You can live happily without
it for years, but when your hour arrives it becomes critically
important, yet it's too late to buy it. If you use `MySQL Server' for
important applications and encounter sudden difficulties, it may be too
time consuming to figure out all the answers yourself. You may need
immediate access to the most experienced `MySQL' troubleshooters
available, those employed by `MySQL AB'.
Copyrights and Licenses Used by MySQL
-------------------------------------
`MySQL AB' owns the copyright to the `MySQL' source code, the `MySQL'
logos and trademarks and this manual. *Note What is MySQL AB::.
Several different licenses are relevant to the `MySQL' distribution:
1. 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'. *Note GPL license::.
The text of this license can be found as the file `COPYING' in the
distribution.
2. The `GNU' `getopt' library is covered by the `GNU Lesser General
Public License'. *Note LGPL license::.
3. Some parts of the source (the `regexp' library) are covered by a
Berkeley-style copyright.
4. Older versions of `MySQL' (3.22 and earlier) are subject to a
stricter license (`http://www.mysql.com/products/mypl.html'). See
the documentation of the specific version for information.
5. The `MySQL' reference manual is currently *not* distributed under
a `GPL'-style license. Use of the manual is subject to the
following terms:
* Conversion to other formats is allowed, but the actual content
may not be altered or edited in any way.
* You may create a printed copy for your own personal use.
* For all other uses, such as selling printed copies or using
(parts of) the manual in another publication, prior written
agreement from `MySQL AB' is required.
Please send an e-mail to for more information or
if you are interested in doing a translation.
For information about how the `MySQL' licenses work in practice, please
refer to *Note MySQL licenses::. Also see *Note MySQL AB Logos and
Trademarks::.
MySQL Licenses
--------------
The `MySQL' software is released under the `GNU General Public License'
(`GPL'), which is probably the best known `Open Source' license. The
formal terms of the `GPL' license can be found at
`http://www.gnu.org/licenses/'. See also
`http://www.gnu.org/licenses/gpl-faq.html' and
`http://www.gnu.org/philosophy/enforcing-gpl.html'.
Since the `MySQL' software is released under the `GPL', it may often be
used for free, but for certain uses you may want or need to buy
commercial licenses from `MySQL AB' at `https://order.mysql.com/'. See
`http://www.mysql.com/products/licensing.html' for more information.
Older versions of `MySQL' (3.22 and earlier) are subject to a stricter
license (`http://www.mysql.com/products/mypl.html'). See the
documentation of the specific version for information.
Please note that the use of the `MySQL' software under commercial
license, `GPL', or the old `MySQL' license does not automatically give
you the right to use `MySQL AB' trademarks. *Note MySQL AB Logos and
Trademarks::.
Using the MySQL Software Under a Commercial License
...................................................
you do not
follow this `GPL' requirement, you break the license terms and forfeit
your right to use the `GPL' program altogether. You also risk damages.
You need a commercial license:
* When you link a program with any `GPL' code from the `MySQL'
software and don't want the resulting product to be licensed under
`GPL', perhaps because you want to build a commercial product or
keep the added non-`GPL' code closed source for other reasons.
When purchasing commercial licenses, you are not using the `MySQL'
software under `GPL' even though it's the same code.
* When you distribute a non-`GPL' application that *only* works with
the `MySQL' software and ship it with the `MySQL' software. This
type of solution is considered to be linking even if it's done
over a network.
* When you distribute copies of the `MySQL' software without
providing the source code as required under the `GPL' license.
* When you want to support the further development of the `MySQL'
database even if you don't formally need a commercial license.
Purchasing support directly from `MySQL AB' is another good way of
contributing to the development of the `MySQL' software, with
immediate advantages for you. *Note Support::.
If you require a license, you will need one for each installation of the
`MySQL' software. This covers any number of CPUs on a machine, and there
is no artificial limit on the number of clients that connect to the
server in any way.
For commercial licenses, please visit our website at
`http://www.mysql.com/products/licensing.html'. For support contracts,
see `http://www.mysql.com/support/'. If you have special needs or you
have restricted access to the Internet, please contact our sales staff
via e-mail at .
Using the MySQL Software for Free Under GPL
...........................................
You can use the `MySQL' software for free under the `GPL' if you adhere
to the conditions of the `GPL'. For additional details, including
answers to common questions about the `GPL', see the generic FAQ from
the Free Software Foundation at
`http://www.gnu.org/licenses/gpl-faq.html'. Common uses of the `GPL'
include:
* When you distribute both your own application and the `MySQL'
source code under the `GPL' with your product.
* When you distribute the `MySQL' source code bundled with other
programs that are not linked to or dependent on the `MySQL' system
for their functionality even if you sell the distribution
commercially. This is called mere aggregation in the `GPL'
license.
* When you are not distributing *any* part of the `MySQL' system,
you can use it for free.
* When you are an Internet Service Provider (ISP), offering web
hosting with `MySQL' servers for your customers. We encourage
people to use ISPs that have MySQL support, as this will give them
the confidence that their ISP will, in fact, have the resources to
solve any problems they may experience with the `MySQL'
installation. Even if an ISP does not have a commercial license
for `MySQL Server', their customers should at least be given read
access to the source of the `MySQL' installation so that the
customers can verify that it is correctly patched.
* When you use the `MySQL' database software in conjunction with a
web server, you do not need a commercial license (so long as it is
not a product you distribute). This is true even if you run a
commercial web server that uses `MySQL Server', because you are not
distributing any part of the `MySQL' system. However, in this case
we would like you to purchase `MySQL' support because the `MySQL'
software is helping your enterprise.
If your use of `MySQL' database software does not require a commercial
license, we encourage you to purchase support from `MySQL AB' anyway.
This way you contribute toward `MySQL' development and also gain
immediate advantages for yourself. *Note Support::.
We feel that
if the `MySQL' database helps your business, it is reasonable to ask
that you help `MySQL AB'. (Otherwise, if you ask us support questions,
you are not only using for free something into which we've put a lot a
work, you're asking us to provide free support, too.)
MySQL AB Logos and Trademarks
-----------------------------
Many users of the `MySQL' database want to display the `MySQL AB'
dolphin logo on their web sites, books, or boxed products. We welcome
and encourage this, although it should be noted that the word `MySQL'
and the `MySQL' dolphin logo are trademarks of `MySQL AB' and may only
be used as stated in our trademark policy at
`http://www.mysql.com/company/trademark.html'.
The Original MySQL Logo
.......................
effortlessly navigating oceans of data. We also happen to like dolphins.
The original `MySQL' logo may only be used by representatives of `MySQL
AB' and by those having a written agreement allowing them to do so.
MySQL Logos that may be Used Without Written Permission
.......................................................
from
`MySQL AB'. The use of these logos is not entirely unrestricted but,
as the name implies, subject to our trademark policy that is also
available on our web site. You should read through the trademark policy
if you plan to use them. The requirements are basically as follows:
* Use the logo you need as displayed on the `http://www.mysql.com/'
site. You may scale it to fit your needs, but may not change
colours or design, or alter the graphics in any way.
* Make it evident that you, and not `MySQL AB', are the creator and
owner of the site that displays the `MySQL' trademark.
* Don't use the trademark in a way that is detrimental to `MySQL AB'
or to the value of `MySQL AB' trademarks. We reserve the right to
revoke the right to use the `MySQL AB' trademark.
* If you use the trademark on a web site, make it clickable, leading
directly to `http://www.mysql.com/'.
* If you are use the `MySQL' database under `GPL' in an application,
your application must be `Open Source' and must be able to connect
to a `MySQL' server.
Contact us via e-mail at to inquire about special
arrangements to fit your needs.
When do you need a Written Permission to use MySQL Logos?
.........................................................
You need written permission from `MySQL AB' before using `MySQL' logos
in the following cases:
* When displaying any `MySQL AB' logo anywhere except on your web
site.
* When displaying any `MySQL AB' logo except the _Conditional Use_
logos mentioned previously on web sites or elsewhere.
we
think it is reasonable that some of the revenue is returned to fund
further development of the `MySQL' database.
MySQL AB Partnership Logos
..........................
more
information, please see *Note Partnering: Business Services Partnering.
Using the word `MySQL' in Printed Text or Presentations
.......................................................
`MySQL AB' welcomes references to the `MySQL' database, but it should
be noted that the word `MySQL' is a trademark of `MySQL AB'. Because
of this, you must append the trademark symbol (`TM') to the first or
most prominent use of the word `MySQL' in a text and, where
appropriate, state that `MySQL' is a trademark of `MySQL AB'. For more
information, please refer to our trademark policy at
`http://www.mysql.com/company/trademark.html'.
Using the word `MySQL' in Company and Product Names
...................................................
Use of the word `MySQL' in product or company names or in Internet
domain names is not allowed without written permission from `MySQL AB'.
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