Well, I'd have to say stuff the Entity Framework. Those of us who have spent many years watching Microsoft change its data access APIs more frequently than many people change their underpants are hardly likely to instantly jump as soon as Microsoft announces that the API they are currently using is now so last week.



The fact that this book has excellent coverage of Linq to SQL is all in its favour, in my opinion. However, the book also has a very clear explanation of the basic concepts, is the first book on Linq that I have seen which clearly explains why we have query expressions as well as query methods, and has excellent Linq to XML coverage if you absolutely can't avoid using the filthy bloated abomination that is XML.



All in all, a most excellent book, a pleasure to read, and highly recommended.

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