Front-end developers frequently want to add functionality to the presentation tier of an n-tier architecture, but such requests can require changes on all tiers just to get the data and present it. This process can be made easier and more flexible by using SQL Server stored procedures to automate the delivery of data in XML format from the database to the front-end components. In the component presented here, stored procedures are invoked by XML strings, XML is returned, converted using XSL, and presented to the client in HTML. The technique supports rapid changes yet doesn't sacrifice the n-tier approach. This approach can be used with either SQL Server 7.0 or SQL Server 2000.
Dave Grundgeiger, Anson Goldade, and Varon Fugman
MSDN Magazine August 2001
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