See also Dataset types and usage in the Knowledge Manager Manual.
Data model objects are now classified as a type of dataset. You can open any data model dataset in Pivot from the Datasets listing page (which replaced the Pivot page).
thanks, Yes I got a good view of pivot, I can access it from data model but, it does not explain why I cannot see in the top menu beside report. It was always there before, during training. is this because this is the latest 6.5?