Access a provisioned SQL DB

Hey :slight_smile:
Sorry if this is the wrong place to ask:
I have an express API that I would like to run in Google Cloud. I made all the provisioning with terraform, but I struggle connecting my express App with the provisioned DB. I have several questions:

  • I made a private network with a private ip for the sql instance, so the public cant talk to it, but just my google compute/app instance, where the express app is running.
  • do i need to shove this express app into the same network, or can it talk to private ips internally?