Systems, methods, and computer products that efficiently share and move data between different types of data storage formats. More particularly, the preferred embodiment of the present invention provides an easy to use graphical user interface (GUI) for displaying, navigating, and selecting hierarchical database segments and fields. The preferred embodiment of the present invention novelly uses a hierarchical tree structure that clearly represents the structures of a database and their mutual exclusivity, for easy understanding of and navigation through the various database structures. The user is prevented from selecting segments and fields that are not valid for the selected path thereby ensuring accuracy in the representation of the database data structures. Also, the user may select a path from the top of the hierarchical tree, the root, to a specific segment or field.