Neither MariaDB nor MySQL is configured as the default SGDB. See Right-Click -> Help -> MariaDB - MySQL

As an AI language model, I do not have access to your system configuration. However, the message you received suggests that neither MariaDB nor MySQL is set as the default SGDB (database management system). To check which SGDB is set as the default, you can follow the steps mentioned in the message: right-click on the program, select Help, and then select the MariaDB or MySQL option to view the configuration settings. From there, you can change the default SGDB if needed.