What Does Nonlinear Hierarchy Mean? Nonlinear Hierarchical Structures are full hierarchical structures with multiple pathways making the data on different paths not linearly related, but nonlinearly related. Nonlinear Hierarchical Queries have the ability to reference and semantically process any single or combination of paths in a multipath hierarchical structure. This greatly increases query correctness, ease of use, provability and meaningfulness and value of the hierarchical data. Nonlinear Hierarchical Processing has the ability to process single and multipath hierarchical queries nonprocedurally and without structure navigation. This is achieved by automatically analyzing the full nonlinear hierarchical structure and its structure semantics together with the nonlinear query requirements. This enables advanced hierarchical processing to be automatically performed for the user and at an optimal global hierarchical optimization level. This hierarchically principled semantic processing dynamically increases the value of the data and guarantees that the hierarchical query results are logically correct.