Hi guys,

TO and OF sometimes serve as prepositions for belonging and attachment. Let me spell it out with two examples:

-There's no back to this couch.
-The data of the database are analyzed.

As for the 1st example, can we use OF for TO? and grammatically (semantically) why?
As for the 2nd example, can we use TO for OF? and grammatically (semantically) why?

Thanks in advance,