Alta UI in ADF 12c provides great options for dashboard implementation. You can use so called 'info tiles' as blocks displaying summary information. These blocks are clickable and based on active tile, content can be rendered. It looks not only modern, but also user friendly.
I have implemented sample application - ADFAltaApp_v11.zip with Alta UI dashboard, based on code examples from Oracle WorkBetter application. You could download and run my sample, it renders two vertically aligned info tiles with summarised information: Click on second info tile, main content will be changed: Read the complete article here.
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