The present invention relates to a database storage structure for the storage of a plurality of results from an experiment on a sample. The database storage structure includes a result storage table for storing the results from the experiment, one or more first annotation storage tables for storing a first set of variables, and one or more second annotation storage tables for storing a second limited set of variables. The one or more second annotation storage tables are further coupled to one or more concordance tables for storing a concordance between the second limited set of variables and a second list of annotations.