Chapter 11. Remote Data Services
With ADO, you typically create two-tier applications in which your application is the first tier and the data source is the second. In this scenario, your application can access data directly.
In some cases, you may wish to create a three-tier application in which a separate middle-tier is added to handle communication with the data source on behalf of the application. In web applications, this functionality of the optional middle tier requires IIS (Internet Information Server) or some other web server to mediate communication between the browser-based client and the data source. Remote Data Service (RDS) allows you to provide this functionality in a middle tier.
This chapter provides a brief overview of RDS.
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