Cash sales is absolutely different from credit sales process. cash sales includes only sales Receipts in which the customer will make the payments at the time of purchase so there is no need of quotation ,sales order and sales invoice. usually cash sales is a dealing between Retailer and the final consumer.
credit sale is usually taking place between company to company, whole sale and retailer.
some time it also taking place between retailer and final consumer but in that case no standard role of credit sale are following.
in cash sale it is necessary that buyers will make the payments at the time of delivery.
In cash sale Payments can also be accepted by Check or by credit card and not only on cash amount base.