To connect to Amazon RDS PostgreSQL DB we need a client software. In this case we use pgAdmin. Install it using the link pgAdmin .
After it is successfully installed we follow the steps below to connect it to the Amazon RDS.
Step-1
From the DB instance details get the end point.

Step-2
As it is a browser based interface, choose the add server option as shown in the below diagram.

Step-3
Use the end point and the master user credentials as the connection details.

Step-4
Once connected, we get the following window.
