The database must be accessed via the UC Libraries website or UC LibGuides (like this one).
Accessing the database independent of UC and creating an account does not grant you UC-provided access and in two weeks Safari will ask you to begin paying.
Only accessing through UC gives you free, unlimited access to the database.
If you copy and paste a link to a Safari Books Online resource, the link will bring the next user to a paywall.
This page gives you options for how to give your students access to these resources and avoid paywalls.
University of Cincinnati Libraries
PO Box 210033 Cincinnati, Ohio 45221-0033