SAP concluded a cooperation contract with MySQL AB in May 2003. According to this contract, the SAP DB database from database version 7.5 is delivered under the name of MySQL MaxDB.
MySQL MaxDB 7.5 is the result of further developing the SAP DB source code. The MaxDB software 7.5 can be used as a direct upgrade for previous SAP DB versions from 7.2.04. According to the releases for SAP applications, this applies to SAP DB databases in SAP installations.
For SAP customers, nothing changes as a result of this contract. Open source users can find more information about the changed licensing terms at the following address:
http://www.mysql.com/products/licensing/opensource-license.html