Here's an article about managing transactions that you don't need to read because, with one exception, Entity Framework will do the right thing by default. But, in the .NET Framework 4 and later, you can do more (if you ever need to).
We all want to have confidence in the software we create. We know that testing plays an important role. Assuming we've overcome the hurdle of learning the various ways to test, what's still missing that inhibits us from having confidence in what we do? How do we go about leading a culture of effective testing?