Draft functionality for SAP Free Style app

Hi All

I need to create a transactional Fiori app. I need some advice as being a beginner I am confused between fiori elements and freestyle…. Is it possible to create a free style app using Draft functionality without BOPF as I am creating my app on BW query or BW cube. As I am not using CDS view I am not sure how can I add annotations for BOPF framework. My actual requirement is create a transactional Fiori app on B4Hana system and I want to give Draft functionality. If you can please guide what approach I should follow it will be great help.

Thanks

Pooja