Installation of PostgreSQL Database
MacOS/Windows/Linux
First download the database from here and start the installation.
Then set the path under which the database is to be installed, e.g:

Select the following components.
- PostgreSQL Server
- pgAdmin4
- Stack Builder
- Command Line Tools
... install postgis extensions using the Stack Builder.

Set and remember the path where the actual database data are stored, e.g.:
- /Library/PostgreSQL/11/data

Set and remember the password for the database superuser (special database administration user).

Define the Port.

Summary of the installation is shown. Start the installation.

Start pgAdmin and create a user.

Set user name.

Set a password.

Set the user rights.

Create the database.

Select the owner of the database.

Now start the critterbase tool and open the settings. Set up the path to the command line tools psql and pg_dump.

Your database is now ready for use.