Sorry if you consider the comments so offensive. I am an author and I have been a developer for about 10 years before become an architect/DBA. And I did the same mistakes because this is a peoples nature to think about their work but not to view a big picture of the corporate project. This is why the architect position is so important. And if a company is not understand it then there is a problem for everybody including developers. I am not blaming developers directly, but in a lot of cases I hear how developers (and I got the same sin before) telling to managers that they do not need an Architect/DBA because they can do the job by ourselves. And I do understand that there are different DBAs and different developers. My point is that both always should work together.