3. The computer implemented method of claim 2 wherein the instance of a workbook data structure represents global data behavior aspects of the workbook from the spreadsheet data and each of the at least one instance of a worksheet data structure represents global data behavior aspects of each worksheet from the spreadsheet data.
2. The computer implemented method of claim 1 further comprising: instantiating, by the processor in response to the received load request, an instance of a workbook data structure representative of a workbook from the spreadsheet data, and at least one instance of a worksheet data structure representative of a worksheet from the spreadsheet data.