This may help.
http://msdn.microsoft.com/data/default.aspx?pull=/library/en-us/dnadonet/html/adocnet4.asp


>Hi folks,
>
>I may just be hard headed, but can someone shed some light on the benefits of using datasets in an ASP.NET environment?
>
>I understand *in principle* what datasets are, however coming from the ASP/COM+ background in web development, what benefit do datasets offer over straight command objects calling stored procs and insert/update SQL statements, and data readers for displaying data?
>
>I realize the benefits of datasets in the context of web services and the transmission of the dataset via XML, but what about in a typical web application?
>
>I'm sure I am missing something obvious...
>
>TIA,