Request to Provision a Dedicated PostgreSQL Database (Business Plan + Extra Server Resources)

We are currently using the Business Plan with Extra Server Resources enabled.

Would it be possible to provision a PostgreSQL database within the same server instance where our Anvil app is running, which we could freely access and use from our server code?

Additionally, would it be possible to access that database from outside of Anvil (i.e., from external tools or systems)?

Thank you for your support.