Only those who will risk going too far will possibly find out how far they can go.
—T. S. Elliot
The 70-444 test is focused on optimizing and maintaining database solutions. It is expected that someone who will pass this test has dedicated three or more years to database work. That's not to say that if you don't have three years, you can't take and pass this test. You may be quicker than others. But there is an expectation of some experience.
Database work falls into many different phases. Your experience is expected to be in two or more of the following phases: