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We have this rather large project at work, one that’s been in development for a few years now. This project has had many releases already, and from a business perspective, is quite successful. From a technical point of view, there were definitely some things that could’ve been better. The largest problem is that this project uses a very extensive code-generation process. This code generation process basically retrieves all of the database metadata and generates an entire Data Access Layer (based on basic ADO.NET), a shitload of automated tests to cover that entire DAL, a whole lot of extra classes which form a data-driven business layer (real business logic can still be added though), and again, a shitload of automated tests that cover the data-driven business layer.