Hi I have a table which holds orders. The productid and the quantity of items purchased are held in this table amongst other things such as the order date, customer id etc. Orders are calculated by getting the product cost and multiplying it by quantity. Its occured to me that if the price of items changes,because the total of an order is always calculated the order total for previous orders will change. IS there any better way to store orders and price info or should I also store the current price of each product when the order is made in the order table - wouldn't this lead to data being duplicated?
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