Jeff Derstadt is a developer on the Entity Framework team. Erik stops by to learn more about what Jeff does day to day. Jeff and Erik talk about programming data, generally, and the Entity Framework development model, specifically. We learn about how Jeff got into software development, how/why he landed in the data world, things he's working on, his team's interaction with developer customers, providing the things users of EF need/want, and the software engineering process employed by his broader development team, especially as it relates to the developer-tester relationship. Check out the latest Checking In with Erik Meijer.