3. The system of claim 1 , wherein the hierarchical model comprises one or more types of nodes and the tables that correspond to the structure of the hierarchical model comprise: a model table configured to comprise one or more attributes of the hierarchical model; a Node_Class table configured to comprise information related to the types of nodes in the hierarchical model; and a Node table configured to comprise a definition of each node within the hierarchical model and hierarchy information for each node corresponding to the relationship of each node to the hierarchical model.
5. The system of claim 3 , wherein the hierarchical model further comprises: an Nclass_Group table configured to comprise information defining a group of the types of nodes in the hierarchical model within the Node_Class table that build a pool of nodes within a mapping; a Domain table configured to comprise information defining data element types that belong to a node, data element types that belong to a mapping, and data structures stored within the hierarchical model; an Attribute table configured to comprise operational data associated with a node and operational data associated with a mapping; a Display table configured to comprise information defining a graphical representation of a specific view of the hierarchical model; a Shape table configured to comprise one or more graphical parameters defining how node information is displayed, wherein the node information comprises the specification of a position, a size, a shape, and a background; a Range table configured to comprise color information corresponding to shapes for displaying a shape as part of a query result; a Query table configured to comprise display information defining how a result of an SQL statement executed on the hierarchical model is displayed; a Widget table configured to comprise layout information defining a layout of the nodes; and a Tree table configured to comprise information defining how to build a tree page based on the Widget table.