You build up the connection to the database by a configurable JDBC URL.

Decide to use auto commit or transaction handling (commit/rollback).

By means of the JDBC-URL, JDBC (java database connectivity) searches for the matching JDBC driver, containing the necessary driver classes. sqleditor includes driver for PostgreSQL. If you have installed an ODBC driver for your database, you also can use JDBC-ODBC-Bridge. How to add JDBC drivers you can lookup in Driver.