Is it possible for the game client to make queries to the database?

Question

Information Security

In short, the client loads the images, then makes a request to the remote database and from there comes the answer which of them to draw, they tell me something like this is not healthy. Is it so?

Answer 1

If you do it right, you can.
There are all sorts of cloud bases just for this - for example, firebase.
If you want to put your mysql server on the Internet, then of course it’s better not to.

Answer 2

If you set up the rights as expected (after reading and UNDERSTANDING! of the manual), then you can.
Just do not forget that if there are "holes" (vuln) in the base code, it will be too late and it is necessary to inspect and filter incoming requests to the database port in advance, blocking all unnecessary and skipping only the expected ones.