Haven't heard specifically of the terminology "three schema approach", but the idea fits with other notions I've heard about: https://www.martinfowler.com/bliki

Haven't heard specifically of the terminology "three schema approach", but the idea fits with other notions I've heard about: https://www.martinfowler.com/bliki/BoundedContext.html https://www.martinfowler.com/bliki/BoundedContext.html and Clean Architecture: https://blog.cleancoder.com/uncle-bob/2012/08/13/the-clean-architecture.html https://blog.cleancoder.com/uncle-bob/2012/08/13/the-clean-a...