I am giving you bits you asked for but no trying to do the whole thing for you. My only interest is to put together a simple demo of how to use linked tables. I have still not attacked using a table relation and an adapter. This allows for sinking based on the relation.
Updates are done either manually by reacting to changes or via a batch when a post button or event says to save the changes.
In an adapter based scenario you would use an "UpdateCommand" on the data adapter:
http://msdn.microsoft.com/en-us/library ... pdate.aspx
Looking for Help with DataGridView
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