Developing Amazon RDS applications – Windows 

Amazon RDS (Relational Database Service) is a web service that provides a relational database in the cloud. This service makes it easier to create, manipulate, and scale a relational database on the cloud. It provides several industry standard databases such as Oracle, Microsoft SQL Server, and so on. 

DB Instance and instance classes

Amazon RDS spawns multiple processes that read and write to the database. Some processes create and maintain the transaction log files. A set of all such processes along with the database together are called a database instance. Every database instance has its own isolated set of processes that are specific only to its own database and log files. A single database instance can have more than one database associated with it. The database instance can be accessed using the AWS Command Line Interface, AWS RDS API, or the AWS Web Console.

The performance and computational capability of the database instance is determined...