To Backup a database using pgAdmin4 (To get a data dump using a pgAdmin4):

1. Open pgAdmin 4 and connect to your server.
2. Select the database you wish to back up from the left sidebar.
3. Right-click on the database and choose Backup.
4. Specify the file path and name for the backup file in the Filename field.
5. Choose the format you want (e.g., Custom, Tar, Plain, Directory) from the format dropdown.
6. Click Backup

The Custom and Tar formats save the backup in binary SQL, which is more suitable for restores involving more complex data types and faster restoration.