From an efficient database design point of view, you'd want to look at 
using a two-table method for this, for example....

InvoiceHeader Table
         InvoiceNumber
         InvoiceDate
         Customer

InvoiceItem Table
         InvoiceItemId
         InvoiceNumber
         ProductCode
         Quantity
         Price
         Discount

etc

that way, if you want to calculate discounts etc etc, you can use SQL 
Aggregate functions (COUNT, SUM etc) to get the values back from the Item 
table for the relevant Invoice.

Hope this helps

Nick





At 00:56 18/05/00 -0700, you wrote:
>I am working on a CF-based invoice log system (one
>module of a Sales Management System). At present we
>use Excel with the following columns:
>
>InvoiceNo
>InvoiceDate
>Customer
>10 product code columns (one  for each product)
>TotalDiscount
>
>Invoiced amount is entered under the specific product
>column. Excel sheet shows rows of invoices with list
>of products (with their amounts). We can easily find
>total invoice amount for a specific product, total
>discount given, etc. - just by summarizing a specific
>column.
>
>We want to have the same benefits plus other added
>benefits in the CF based system. I can achieve the
>same benefits by creating a table with same number of
>database columns. But I don't want to fix 10 columns
>for 10 products (as the number of products could
>change). I am thinking of using Select List.
>
>Kindly suggest a best table structure for this
>situation.
>
>Thanks for your help.
>Naveen
>
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