Final answer:
MySQL is indeed an open source DBMS that is free to use for most database applications, though a commercial license may be required for certain proprietary redistribution or sale.
Step-by-step explanation:
The statement that MySQL is an open source DBMS (Database Management System) which is license-free for most database applications is True. MySQL is widely known for its open-source licensing model, which allows individuals and businesses to use the software without the need for a paid license for most use cases.
However, there are scenarios where a commercial license must be purchased, particularly when MySQL is being used as part of a proprietary system that you plan to redistribute or sell. Open Source means that the source code is available to anyone who wishes to view, modify, and distribute the software as long as they comply with the GNU General Public License terms under which MySQL is released.