I would agree, if you already understand the business problem. However the UI is often the only thing you can discuss with the client; few clients are going to be able to react to a data model but most can engage in a discussion based on a proposed UI design, which can then help you, the analyst, understand what you need to capture in your data model.
Comments
I would agree, if you already understand the business problem. However the UI is often the only thing you can discuss with the client; few clients are going to be able to react to a data model but most can engage in a discussion based on a proposed UI design, which can then help you, the analyst, understand what you need to capture in your data model.