1. A database merging apparatus comprising: a database pair generator that creates a database pair from a first database; a probe set generator that creates a database probe set from a second database; a comparator in communication with said database pair generator and said probe set generator, said comparator determining if said database probe set correlates to said database pair; and an identifier in communication with said comparator to identify a correlation between said database pair and said database probe set so that correlating data from said first database and said second database can be accessed if there is a correlation.