Updating access spreadsheet

In modern spreadsheet applications, several spreadsheets, often known as worksheets or simply sheets, are gathered together to form a workbook.

A workbook is physically represented by a file, containing all the data for the book, the sheets and the cells with the sheets.

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This electronic concept of cell references was first introduced in LANPAR (Language for Programming Arrays at Random) (co-invented by Rene Pardo and Remy Landau) and a variant used in Visi Calc, and known as "A1 notation".

Additionally, spreadsheets have the concept of a range, a group of cells, normally contiguous.

A spreadsheet may also refer to one such electronic document.

Spreadsheet users can adjust any stored value and observe the effects on calculated values.

Worksheets are normally represented by tabs that flip between pages, each one containing one of the sheets, although Numbers changes this model significantly.

Cells in a multi-sheet book add the sheet name to their reference, for instance, "Sheet 1! Some systems extend this syntax to allow cell references to different workbooks.

Besides performing basic arithmetic and mathematical functions, modern spreadsheets provide built-in functions for common financial and statistical operations.

Such calculations as net present value or standard deviation can be applied to tabular data with a pre-programmed function in a formula.

This makes the spreadsheet useful for "what-if" analysis since many cases can be rapidly investigated without manual recalculation.

Modern spreadsheet software can have multiple interacting sheets, and can display data either as text and numerals, or in graphical form.

The program operates on data entered in cells of a table.

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