Rule-based reverse engineering
As the article mentions data looking for a question, I've been looking for some time for a way to extract business rules out of big databases, say SAP. This would be useful for upgrade projects, as you wouldn't have to start from scratch, you could list rules to check their currency, and you could provoke discussion on exceptions.
Does such an animal exist, or would it be an unusable concept? Till now, I have only had offers from consultants to build our company a bespoke version.