5. The method of claim 4 , wherein the step of the presenting the results of the comparing further comprises, in response to a selection of one of the result window JSON script statements, SQL query statements, the XML statements of the subsets of the first plurality of XML statements or the XML statements of the second plurality of XML statements: invoking a detail window in the graphical user interface display that provides detail data of the selected one of the JSON script statements, SQL query statements, the XML statements of the subsets of the first plurality of XML statements and the XML statements of the second plurality of XML statements; and invoking a spreadsheet window in the graphical user interface displays at least one of the XML statements of the subsets of the first plurality of XML statements and the XML statements of the second plurality of XML statements that are relevant to the selected one of the JSON script statements, SQL query statements, the XML statements of the subsets of the first plurality of XML statements and the XML statements of the second plurality of XML statements.
6. The method of claim 5 , wherein the step of making the JSON call via the Extensible Markup Language (XML) Hypertext Transfer Protocol (HTTP) HTTP object against the data warehouse data item stored in the back end server comprises: using a JSON web service to make the JSON call to the back end server; and using Microsoft XML HTTP to implement the XML HTTP object.