Speed Performance Question

[Stefan Vunckx]

I am deciding how to setup my MySQL database but i'm having some doubts.

I just want to know which is faster, when I query:

One table with a double primary key and one search field (3 search conditions)
of
Two tables with each a single primary and one search field in each table (3 
search conditions)


I dont find much information about this, and I dont have the time to produce a 
table with 10.000+ records to test this myself.


Stefan Vunckx