MySQL 의 라이센스는 생각보다 복잡합니다.
일단 Windows 용 서버는 분명히 free가 아닙니다. 하지만 라이센스 비용은 그렇게 비싸지 않으므로 정식적으로 구입을 해서 사용하는 것도 큰 부담은 없을 것으로 생각됩니다.
그리고 리눅스 용의 경우에는 개발 및 본인이 직접 사용하는 경우에는 무료로 이용 할 수 있습니다. 단지 개발을 해주 타인에게 줄때에는 그 mySQL 서버에 대한 라이센스 비를 주어야 합니다.
다음은 MySQL 의 Microsoft 에 대한 라이센스의 원문 입니다.
This License applies when running MySQL on any Microsoft operating system. Microsoft operating systems include all versions of Microsoft Windows NT and Microsoft Windows.
YOU SHOULD CAREFULLY READ THE FOLLOWING TERMS AND CONDITIONS BEFORE USING, COPYING OR DISTRIBUTING MySQL. BY USING, COPYING AND DISTRIBUTING MySQL, YOU INDICATE YOUR ACCEPTANCE OF THIS LICENSE TO DO SO, AND ALL ITS TERMS AND CONDITIONS FOR USING, COPYING AND DISTRIBUTING MySQL OR WORKS BASED ON IT. NOTHING OTHER THAN THIS LICENSE GRANTS YOU PERMISSION TO USE, COPY OR DISTRIBUTE MySQL OR ITS DERIVATIVE WORKS. THESE ACTIONS ARE PROHIBITED BY LAW. IF YOU DO NOT ACCEPT THESE TERMS AND CONDITIONS, DO NOT USE, COPY OR DISTRIBUTE MySQL.
Evaluation and License Registration. This is an evaluation version of MySQL for Win32. Subject to the terms below, you are hereby licensed to use MySQL for evaluation purposes without charge for a period of 30 days. If you use MySQL after the 30 day evaluation period the registration and purchase of a MySQL license is required. The price for a MySQL license is currently 200 US dollars and email support starts from 200 US dollars/year. Quantity discounts are available. If you pay by credit card, the currency is EURO (The European Unions common currency) so the prices will differ slightly. The easiest way to register or find options about how to pay for MySQL is to use the license form at TcX's secure server at https://www.mysql.com/license.htmy. This can be used also when paying with credit card over the Internet. Other applicable methods for paying are SWIFT payments, cheques and credit cards. Payment should be made to:
Postgirot Bank AB
105 06 STOCKHOLM, SWEDEN
TCX DataKonsult AB
BOX 6434
11382 STOCKHOLM, SWEDEN
SWIFT address: PGSI SESS
Account number: 96 77 06 - 3
Specify: license and/or support and your name and email address. In Europe and Japan, EuroGiro (that should be cheaper) can be used to the same account. If you want to pay by cheque make it payable to "Monty Program KB" and mail it to the address below.
TCX DataKonsult AB
BOX 6434
11382 STOCKHOLM, SWEDEN
For more information about commercial licensing, please contact:
David Axmark
Kungsgatan 65 B
753 21 UPPSALA
SWEDEN
Voice Phone +46-18-10 22 80 GMT 9-21. Swedish and English spoken
Fax +46-8-729 69 05 Email *much* preferred.
E-Mail: mysql-licensing@mysql.com
For more about the license prices and commercial support, like email support, please refer to the MySQL manual. See section 3.5 MySQL licensing and support costs. See section 3.6 Types of commercial support. The use of MySQL or any work based on MySQL after the 30-day evaluation period is in violation of international copyright laws.
Registered version of MySQL. After you have purchased a MySQL license we will send you a receipt by paper mail. You are allowed to use MySQL or any work based on MySQL after the 30-days evaluation period. The use of MySQL is, however, restricted to one physical computer, but there are no restrictions on concurrent uses of MySQL or the number of MySQL servers run on the computer. We will also email you an address and password for a password-protected WWW page that always has the newest MySQL-Win32 version. Our current policy is that a user with the MySQL license can get free upgrades. The best way to ensure that you get the best possible support is to purchase commercial support!
Registration for use in education and university or government-sponsored research. You may obtain a MySQL license for the use in education and university or government-sponsored research for free. In that case, send a detailed application for licensing MySQL for such use to the email address The following information is required in the application:
The name of the school or institute.
A short description of the school or institute and of the type of education, resarch or other functions it provides.
A detailed report of the use of MySQL in the institution.
In this case you will be provided with a license that entitles you to use MySQL in a specified manner.
Distribution. Provided that you verify that you are distributing an evaluation or educational/research version of MySQL you are hereby licensed to make as many literal (i.e., verbatim) copies of the evaluation version of MySQL and documentation as you wish.
Restrictions. The client code of MySQL is in the Public Domain or under the GPL (for example the code for readline) license. You are not allowed to modify, recompile, translate or create derivative works based upon any part of the server code of MySQL.
Reservation of Rights. No rights are granted to MySQL except as expressly set forth herein. You may not copy or distribute MySQL except as expressly provided under this License. Any attempt otherwise to copy or distribute MySQL is void, and will automatically terminate your rights under this License. However, parties who have received copies, or rights, from you under this License will not have their licenses terminated so long as such parties remain in full compliance.
Other Restrictions. If the distribution and/or use of MySQL is restricted in certain countries for any reason, the Licensor may add an explicit geographical distribution limitation excluding those countries, so that distribution is permitted only in or among countries not thus excluded. In such case, this License incorporates the limitation as if written in the body of this License.
Limitations. MySQL IS PROVIDED TO YOU "AS IS," WITHOUT WARRANTY. THERE IS NO WARRANTY FOR MySQL, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF MySQL IS WITH YOU. SHOULD MySQL PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL THE LICENSOR, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE MySQL AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE MySQL (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF MySQL TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
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