[AndySedeyn]

The loop is ineffective and you've probably never heard of foreign keys or making relations between tables (database normalization). You can also work out another way of updating the player's score; example: when they disconnect instead of updating it on a minute-basis.

There is a three-part tutorial in my signature about database normalization and its implementation in PAWN. The tutorial(s) is(/are) made by Vince.