Milind Lele, a PM on the Visual Studio Pro Tools team shows us the improvements made to the tooling in Visual Studio SP1 for occasionally connected clients as well as the new data type support for SQL Server 2008. Using SQL 2008 built-in change tracking, you don't need to make modifications to your table schemas like you have to do with SQL 2005. Additionally he shows off a “smarter” DataSet designer where you can have tables coming from server and client data stores all contained within one model.

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