How do I set EF to use an SQL datatype of XML for an object? Moreover, how does one create SQL computed columns.

We store alot of dynamic data that some folks cause meta data per row/record, it isn't standard and therefore we rely upon the xml data structure and then use computed columns to create so keys that we may use for faster SQL searches.

Quite frankly - an expando object mapping to an xml column would really float our boat.

Thanks in advance.

ef-code-first entity-framework-4.1
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