Во избежание искажения смысла лицензии, являющейся юридическим докуметом, привожу ее в оригинальном виде (скопирована из оригинальной документации).

                        MYSQL FREE PUBLIC LICENSE 
                       (Version 4, March 5, 1995) 
           Copyright (C) 1995, 1996 TcX AB & Monty Program KB & Detron HB 
                Stockholm SWEDEN, Helsingfors FINLAND and Uppsala SWEDEN, 
                        All rights reserved. 
        NOTE: This license is not the same as any of the GNU Licenses 
        published by the Free Software Foundation.  Its terms are 
        substantially different from those of the GNU Licenses. 
        If you are familiar with the GNU Licenses, please read this 
        license with extra care. 
This License applies to the computer program known as "mysql".  The 
"Program", below, refers to such program, and a "work based on the 
Program" means either the Program or any derivative work of the Program, 
as defined in the United States Copyright Act of 1976, such as a 
translation or a modification.  The Program is a copyrighted work whose 
copyright is held by TcX Datakonsult AB and Monty Program KB and Detron HB. 
BY MODIFYING OR DISTRIBUTING THE PROGRAM (OR ANY WORK BASED ON THE 
PROGRAM), YOU INDICATE YOUR ACCEPTANCE OF THIS LICENSE TO DO SO, AND ALL 
ITS TERMS AND CONDITIONS FOR COPYING, DISTRIBUTING OR MODIFYING THE 
PROGRAM OR WORKS BASED ON IT.  NOTHING OTHER THAN THIS LICENSE GRANTS YOU 
PERMISSION TO MODIFY OR DISTRIBUTE THE PROGRAM OR ITS DERIVATIVE WORKS. 
THESE ACTIONS ARE PROHIBITED BY LAW.  IF YOU DO NOT ACCEPT THESE TERMS 
AND CONDITIONS, DO NOT MODIFY OR DISTRIBUTE THE PROGRAM. 
1.  Licenses. 
Licensor hereby grants you the following rights, provided that you comply 
with all of the restrictions set forth in this License and provided, 
further, that you distribute an unmodified copy of this License with the 
Program: 
(a) You may copy and distribute literal (i.e., verbatim) copies of the 
Program's source code as you receive it throughout the world, in any 
medium. 
(b) You may modify the Program, create works based on the Program and 
distribute copies of such throughout the world, in any medium. 
2.  Restrictions. 
This license is subject to the following restrictions: 
(a) Distribution of the Program or any work based on the Program by a 
commercial organization to any third party is prohibited if any payment is 
made in connection with such distribution, whether directly (as in payment 
for a copy of the Program) or indirectly (as in payment for some service 
related to the Program, or payment for some product or service that 
includes a copy of the Program "without charge"; these are only examples, 
and not an exhaustive enumeration of prohibited activities).  However, the 
following methods of distribution involving payment shall not in and of 
themselves be a violation of this restriction: 
        (i) Posting the Program on a public access information storage 
and retrieval service for which a fee is received for retrieving 
information (such as an on-line service), provided that the fee is not 
content-dependent (i.e., the fee would be the same for retrieving the 
same volume of information consisting of random data). 
        (ii) Distributing the Program on a CD-ROM, provided that the 
files containing the Program are reproduced entirely and verbatim on such 
CD-ROM, and provided further that all information on such CD-ROM be 
redistributed for non-commercial purposes without charge. 
(b) Activities other than copying, distribution and modification of the 
Program are not subject to this License and they are outside its scope. 
Functional use (running) of the Program is not restricted, and any output 
produced through the use of the Program is subject to this license only 
if its contents constitute a work based on the Program (independent of 
having been made by running the Program). 
(c) You must meet all of the following conditions with respect to the 
distribution of any work based on the Program: 
        (i) If you have modified the Program, you must cause your work to 
carry prominent notices stating that you have modified the Program's files 
and the date of any change; 
        (ii) You must cause any work that you distribute or publish, that 
in whole or in part contains or is derived from the Program or any part 
thereof, to be licensed as a whole and at no charge to all third parties 
under the terms of this License; 
        (iii) If the modified program normally reads commands 
interactively when run, you must cause it, at each time the modified 
program commences operation, to print or display an announcement including 
an appropriate copyright notice and a notice that there is no warranty (or 
else, saying that you provide a warranty).  Such notice must also state 
that users may redistribute the Program only under the conditions of this 
License and tell the user how to view the copy of this License included 
with the Program.  (Exception: if the Program itself is interactive but 
does not normally print such an announcement, your work based on the 
Program is not required to print an announcement.); 
        (iv) You must accompany any such work based on the Program with 
the complete corresponding machine-readable source code, delivered on a 
medium customarily used for software interchange.  The source code for a 
work means the preferred form of the work for making modifications to it. 
For an executable work, complete source code means all the source code for 
all modules it contains, plus any associated interface definition files, 
plus the scripts used to control compilation and installation of the 
executable code.  However, the source code distributed need not include 
anything that is normally distributed (in either source or binary form) 
with the major components (compiler, kernel, and so on) of the operating 
system on which the executable runs, unless that component itself 
accompanies the executable code; 
        (v) If you distribute any written or printed material at all with 
the Program or any work based on the Program, such material must include 
either a written copy of this License, or a prominent written indication 
that the Program or the work based on the Program is covered by this 
License and written instructions for printing and/or displaying the copy of 
the License on the distribution medium; 
        (vi) You may not impose any further restrictions on the recipient's 
exercise of the rights granted herein. 
If distribution of executable or object code is made by offering the 
equivalent ability to copy from a designated place, then offering 
equivalent ability to copy the source code from the same place counts as 
distribution of the source code, even though third parties are not 
compelled to copy the source code along with the object code. 
3.      Reservation of Rights. 
No rights are granted to the Program except as expressly set forth 
herein.  You may not copy, modify, sub-license, or distribute the Program 
except as expressly provided under this License.  Any attempt otherwise 
to copy, modify, sub-license or distribute the Program 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. 
4.      Other Restrictions. 
If the distribution and/or use of the Program is restricted in certain 
countries for any reason, 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. 
5.      Limitations. 
THE PROGRAM IS PROVIDED TO YOU "AS IS," WITHOUT WARRANTY.  THERE IS NO 
WARRANTY FOR THE PROGRAM, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT 
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 
PARTICULAR PURPOSE AND NON INFRINGEMENT OF THIRD PARTY RIGHTS.  THE ENTIRE 
RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. 
SHOULD THE PROGRAM 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 LICENSOR, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE 
PROGRAM 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 THE PROGRAM (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 THE PROGRAM TO OPERATE WITH ANY OTHER 
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE 
POSSIBILITY OF SUCH DAMAGES.