Duplication in User Interfaces: 10 Questions

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I'm trying to gauge levels of 'duplication' when constructing an application's User Interface. That is, information you have to specify both for the back-end and again for the front-end (see http://kennardconsulting.blogspot.com/search/label/Duplication for more detail)

In your app, if you were to add a new field to the existing back-end (eg. by specifying its name/type, maximum length, whether it is nullable etc) you would also need to:

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