The present invention provides relational database systems for storing biomolecular sequence information together with biological annotations detailing the source of the sequence information, and associated reagent information. The acquisition, storage and access of reagent information associated with databased biomolecular sequence information is a particular advantage of the present invention. Such reagent information identifies genetic information and materials which may be made available to a user of the relational database system of the present invention for further application in research, therapeutic pharmaceutical development or other fields. The reagent information aspect of the present invention is preferably used in conjunction with a biomolecular sequence relational database system.