Hello Rayna Mariam Thomas,
Till today this are databases that mendix supports in a direct fashion:
https://community.mendix.com/link/space/databases/questions/137847
However, you could always try to connect to your database in a different way, for example with OData, REST or a JDBC
For the first two you can use Mendix Modeller directly for the latter one you can download a marketplace module Database connector.
https://marketplace.mendix.com/link/component/2888
https://marketplace.mendix.com/link/component/219862
supported by mendix
mongo db connector
https://marketplace.mendix.com/link/component/208152
community supported
Hope this helps,
Good luck!