1. Click on More and then click on MariaDB on the connect pane on right side of welcome screen.
2. A dialog box below opens.
3. Enter the server, username and password for the server. 3306 is the default value for port.
4. Now click and sign in.
5. Now select the database required.
6. You can see 2 buttons in the data section. (select automatically update to update data whenever updated to refresh )
7. Then drag or select the sheets required and go to Worksheet.
Hope this helps you.