Here's what's in the issue:
Data Services: Develop Robust and Scalable Apps with SQL Server Data Services We introduce SQL Server Data Services, which exposes its functionality over standard Web service interfaces. by David Robinson
ADO.NET: Achieve Flexible Data Modeling with the Entity Framework We answer common questions regarding the Entity Framework and provide an understanding of how and why it was developed. by Elisa Flasko
Transactions: Build Scalable Systems That Handle Failure Without Losing Data Systems that handle failure without losing data are elusive. Learn how to achieve systems that are both scalable and robust. by Udi Dahan
In the columns, Ken Getz begins a series of columns on the LINQ Enumerable class, Dino Esposito introduces the HTML Message pattern, Dr. James McCaffrey provides an introduction to WCF testing. Stephen Toub demonstrates asynchronous I/O with WebClient and Juval Lowy continues his series of columns on code access security in WCF.
There's much more in the issue, and I'll be blogging about these and other articles throughout the month.