1. A method for managing an electronic spreadsheet workbook, the method comprising: providing an electronic spreadsheet workbook having a set of data fields; and producing a workbook part that is separate from the spreadsheet workbook, wherein the workbook part comprises no more than a subset of a set of data fields that define the electronic spreadsheet workbook, the workbook part is separate from the spreadsheet workbook, and the workbook part is manageable independently from the spreadsheet workbook.