1. A system comprising: a database storage structure for storing data of microarray experiments, said database storage structure being embodied in a computer readable medium, having a plurality of results from experiments on one or more samples, the database structure comprising: a definition table comprising rows, wherein each row of the definition table comprises an annotation, a unique identification number and a predefined value, wherein all possible predefined values related to the annotation and its corresponding unique identification number are included in the definition table in separate rows, and wherein said predefined values are identified by an enumerable or countable format and wherein additional annotations are added to the table by addition of one or more rows; one or more experiment annotation tables, each table comprising rows, wherein each row comprises an annotation predefined in the definition table stored together with an allowed value as predefined in the definition table; a processing unit for statistically analyzing the results in the database storage structure to produce statistically analyzed results; and an output device adapted to produce an output based on said statistically analyzed results.