The User Interface is not Your Domain Model

Back in 2012 in the Open Source Journal (2012 issue 4) Robert C Martin argued that the database in not the center of your application. Given that DDD is more prevent now than then I would like to make a further argument.

The main problem that some companies have in building a domain model is that they don’t understand the difference between their user interface and the model. This is a key point. For some applications these can be very similar. However for others there are processes that live beyond the UI that are not typically discussed outside of the development team. It’s this part that having a clear distinct Domain Model helps with.

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