I wrote a couple of blogs in the past that talked about creating dynamic UIs based on a model layer that changes (example1 example2). Well in 12c there is a new ADF Faces component af:dynamicComponent that makes dynamic forms even more powerful. This component can be displayed as various UI components at runtime. This allows us to create Forms and tables with full functionality in a dynamic way.
In fact, we use this when you create either a form or a table component in your JSF page dragging over a data control. We now allow you to not specify each field in your UI but just say that you want to show all the fields in the data control.
In the demo below I show you how this is done, and then review how your UI automatically updates when you add fields in your model layer. For example if your DB changed and you used the "Synchronize with DB" and added the field to the VO - that's it no more need to go to every page and add the new field.
Check it out: