Ever Forward responderá sua pergunta:
This is not an Internet URL, but it functions similarly. You now need to tell LibreOffice to connect to a specific database on a specific computer:
dbname=mydb host=localhost
Use the name of your database in the dbname part. I used localhost for the host part, since PostgreSQL is on the same computer, but I would need to change that in the event that I want to connect from a remote computer.