Yep, sequential Bristol is the answer.
When you have finished a set of 100 or so questions, write down the serial numbers of the ones you got wrong. Many of my friends did the databases over and over using up tons of time.
The reality is, its always the same questions you get wrong (usually because they don't make any sense, are written badly or are nonsense).
Then put in the serial numbers and just do all the ones you got wrong again. There's no point answering questions you all ready know. That's a waste of time. PS - If you guess one correct, but it was total fluke, add that serial number as well. You may get it wrong next time. Your list will get smaller and smaller until you've eventually got everything right. Then do the database once over and you'll be amazed at the improvement. Repeat if necessary.
Work smarter not harder.