Data Access and Transactions

Middle-Tier Elements of Client-Side Data Access

The middle tier is the “bridge” between client computers and database servers. The components on the middle tier respond to requests from the user (or business services) in order to execute a business task.

In an RDS application, business objects on the middle tier handle the data request from the client sent through a transport protocol such as HTTP. Data, in the form of Recordset objects, is made available as an update to client-side controls through the OLE DB provider. The middle tier consists of the following components:

• IIS 5.0 and ADISAPI
• RDSServer.DataFactory or business objects

See the following:

• IIS 5.0 and ADISAPI
• The RDS Data Factory and Custom Business Objects
• Designing Custom Business Objects

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