>1. The Biz objects classes - how did you create them exactly?


I used the programmer's design pattern... I typed them in by hand.. :)


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>2. In these classes code what should I place instead of Quay.MobileOrders.DataSets?

Whatever namespace you want them to live in.


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>I created three DataSets for the project called InventoryDS, OrdersDS and OrderDetailsDS. They are included in the project. Is it correct?

Probably.. don't know without seeing the way you have it set up..