Hi Dale,

>Both FedEx and UPS have xml tracking. They say you can search for tracking #'s up to 365 days old. That is millions or 100's of millions of records. Doing an xml search takes a couple seconds.

They have a relational database server running as the backend (Oracle or DB2, maybe). XML is only used to transfer information from the server to the client, not for storage. If you would download those 100 of million records via XML, it would take some time.

Christof