Problem domain analysis is the process of creating a model describing the problem to be solved.
Description
Problem domain analysis is completely independent of solution domain constructs, and is therefore eminently reusable. Once the problem domain analysis is performed for a business domain, it can be applied to multiple implementation technologies over time as technology changes.
Fundamentally, a video rental store is just a video rental store. The required workflow does not change, regardless of whether the solution is implemented with a spiral-bound notebook, or a distributed, peer-to-peer database solution.
References
Problem domain analysis Wikipedia(Text) CC BY-SA