No.
The only flag at the liferay level is whether a user is logged in or not, but beyond that flags do not really control whether the portlet should be displayed or not.
I guess you could do something tricky like create a new role. Create the portlet and place it on the page, but only allow users with the given role to view the portlet. The tough part is then mucking around in the bowels of Liferay when the test is done to see if the user has a role to view a portlet - you'd have to inject your check against the database and, if the value is there, artificially grant the role to the user...
