I have chess nuts for breakfast! I don't use books or databases. When playing against me, I hope you'll enjoy the game up to, but not including, the last move...
Tournament Entry Rating is calculated by the formula (CurrentRating + HighestRating) / 2. The entry rating will never drop to more than 100 points below your Highest Rating.
Rated stats are updated within 24 hours of the last completed rated game.