Over at Network Computing you can download a very useful white paper on RFID Architecture by Infosys (requires free registration):

"Early Adopters of RFID are beginning to look beyond proof of concept pilots and field trials. Enterprise scale Solution Design and Integration are emerging as key focus areas. Key to success in both of them is the architecture for integrating data from the RFID hardware layer with a multitude of Enterprise Systems."

This white paper has lots of great diagrams and charts, including this one showing the impact of RFID on enterprise systems:



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