Abstract: A computer-implemented method of managing hierarchically related and heterogeneous data structures includes the steps of separating the data structures from hierarchical information interrelating the data structures and representing and storing the hierarchical information as a nodal tree structure. The nodal tree structure includes a first node and a plurality of second nodes, each node being in a parent-child relationship with at least one other node. The data structures are stored separately from the nodal tree structure and each of the first node and the plurality of second nodes references one of the data structures. Each of the second nodes is a child node, and each child node has a respective parent node selected from among the first node and the plurality of second nodes. Each of the second nodes includes a dependency attribute indicative of a dependency relationship of the child node with its respective parent node.