Online Documentation for SQL Query for PostgreSQL
HTTP tunneling options
To use HTTP tunneling, just upload the tunneling script to the webserver where PostgreSQL server is located, or to any other webserver from which direct connections to your PostgreSQL server are allowed. This script exposes the PostgreSQL API as a set of web-services used by SQL Query for PostgreSQL.
In case of using this connection method the response will be slower as compared to the direct connection or the SSH Tunneling method, since the data are XML encoded and HTTP is stateless by nature. However, all the features of SQL Query for PostgreSQL are available.
Note that the emsproxy.php script file is included into the distribution package and can be found in SQL Query installation directory.