Schema usability improvements on our database environment

As part of our ongoing efforts to improve usability of our simulators, we are happy to let you know that we have enabled a zoom-in and zoom-out functionality in the View Schema tab of our database environment (DBLysis). This update will help test-takers take reference from the most complex schema images with utmost ease. In addition to this functionality, we have also improved the database schema generated in questions for a smoother test-taking experience.