The object-oriented approach used by the present invention provides the ability to develop and manage Internet transactions. The data warehouse includes data servers that are communicatively coupled for data transfer through a link aggregation group having at least two data links. difficile toxoids, or combinations thereof. Then the web roll installation position is shifted to the side reverse to the front and back of the web being unwound from the other web roll. The system permits a user to browse through the hierarchy, and, to readily comprehend segment inter-relationships, selectively expand and contract the displayed hierarchy, as desired, as well as to compare two selected segments or segment groups together and graphically display the results of that comparison.