In an embodiment, a method is provided for displaying data arrays in a graphical user interface. In this method, a first data array and a second data array are accessed. Here, the second data array is nested in the first data array. The first data array comprises first data elements and the second data array comprises second data elements. A hierarchical tree structure of the first and second data arrays is constructed where the first data array is ranked higher than the second data array in the hierarchical tree structure based on the nesting of the second data array in the first data array. An arrangement of the first and second data elements is displayed in the graphical user interface, where the arrangement is based on the hierarchical tree structure.