To connect to Amazon RDS MSSQL server we need a client software. In this case we use Sql Server Management Studio. Install it using the link SSMS .
After it is successfully installed we follow the steps below to connect it to the Amazon RDS.
From the DB instance details get the end point.
Use the end point and the master user credentials as the connection details.
Once connected, we get the following window.
We can also query the MSSQL DB as shown below.