1. A computer-readable storage medium having stored thereon: a relational database comprising: a probe table including a plurality of probe records, each of said probe records specifying a polymer probe for use in one or more polymer probe arrays; a sequence item table including a plurality of sequence item records, each of said sequence item records specifying a nucleotide sequence to be investigated in said one or more polymer probe arrays; and wherein there is a many-to-many relationship between said probe records and said sequence item records.