If I got a £1 for every ISV who asked me "When will Windows Phone 7 get database support?" I would have ... at least enough for a decent case for my Windows Phone 7 rather than a £2 one from ebay  :-)

Well the good news is we announced at MIX11 this month that the next update of Windows Phone 7, called "Mango," will include SQL Server Compact Edition.

You can watch the keynote about Mango over on Channel 9 and this MIX11 presentation covers some of the details of working with SQL Server Compact on Windows Phone via Linq and DataContext.

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