Abstract: A method carried out in a computer system having thereon a spreadsheet file with lines and columns, the columns representing fields and each line representing a record, the sheet also having a header portion with a designation line with a field designation for each column, wherein the method identifies a single reference field, allocates a field type to fields other than the reference field, defines a link for each field with a field type and thereby link with another linked field, builds a hierarchical model representing the links, and generates a graphical hierarchical multilevel representation of the sheet content, with graphical views showing one or more hierarchical levels and displaying this representation on a display.

Abstract: A Method carried out in a computer system including a spreadsheet file having a sheet with lines and columns, wherein columns represent fields, the sheet having a header portion having a designation line with a field designation for each column, a data portion, wherein each line includes a record, the method including: /a/ identifying a single reference field, /b/ allocating a field type to fields other than the reference field, the field type belonging to a set of field type including attribute, parent, and flow, /c/ defining a link, for each field with a type, which establishes a link with another linked field, in particular a parent/child link, /d/ building a hierarchical model representing the parent/child links, /f/ generating a graphical hierarchical multilevel representation of the sheet content, with graphical views showing one or more hierarchical levels and displaying the representation on the display.