PostgreSQL is a popular open source database that offers features not found in some other databases. The PostgreSQL JDBC Driver
The PostgreSQL JDBC Driver is part of the postgres project and is recommended
Quit SQLEditor if it is currently running
Download and unpack the driver archive using stuffit or similar
Locate the file postgresql.jar.
Copy the file postgresql.jar to the directory /Library/Java/Extensions/
You may need to enable TCP/IP connection support in PostgreSQL if this is not already enabled.
Start SQLEditor
Show the preferences window using → and select the database tab. Then enter the values as follows:
Click the add button
Choose File→Import From Database
Select the PostgreSQL database driver in the popup menu. Then enter the details of the connection into the fields.

In this example picture we are loading the database test using a database server running on the local machine with a username of test and a password of test. All other options should be left empty. The connection string will auto-complete with the suggested database url. Unless it looks wrong you should probably use the suggested database url.
|
Value |
Setting |
|
|---|---|---|
|
Hostname |
localhost |
the name of the machine that the database is running on (Use localhost if the database is on the same machine) |
|
Database |
test |
The name of the database to connect to |
|
Username |
username |
The username that you wish to connect using |
|
Password |
pass |
The password to use (optional) |
Click the import button and after a few moments the database structure will appear in new window