Question

In a Function Decomposition Model , The purchasing department of Company X completes a paper purchase order and sends it to Supplier A via fax, with a copy going to the accounts payable department of X. Supplier A ships the goods and they arrive at company X’s receiving dock. A clerk at X’s receiving dock completes a paper receiving document describing the goods and sends it to X’s accounts payable department. Supplier A meanwhile sends a paper invoice to X’s accounts payable department. A clerk in X’s accounts payable department would match three documents: the original purchase order, the receiving document, and the invoice. If all three documents match, an accounts payable clerk issues a paper check to supplier A. If they don’t match, an accounts payable clerk calls supplier A by phone to reconcile any shipment errors.

Answer 1

I don't get your question buddy, I mean there's no requirement mentioned. However I'll still add whatever knowledge I have on this topic. However, if there's any specific requirement you have, please post it in the comments section and I shall reply to you there.

Coming to the function decomposition model, as the name suggests, the model typically breaks down complex processes into smaller functions thereby decomposing them from their orignality, making it easy to understand. It breaks down the entire process into smaller section, sort of dissecting them.

So the example clearly states, in practicality, how does the model work. The process is making a purchase order and paying the same. However, due to the control requirements of any organization, it is only natural that it breaks down the said process, of purchasing, into smaller steps so that greater control can be exercised.

A single process of purchasing, is first broken down into 2 parts, first related to goods and second related to payment. The accounts payable department doesn't proceed before receiving the document from the clerk on the docks who received the goods. Also, by receiving documents from the supplier as well as the clerk as well as purchase department, he is able to ensure that there is no way of any fraud or so as only when all the figures match, is he authorised to release the payment.

So yes, its a lovely model to be used in day to day business transactions, ensuring all controls are effective.

I hope the above solution is what you were looking for. If not, please drop a comment and I shall surely reply to it. For any further queries or doubts in the solution, please feel free to drop a comment. Please do leave a positive feedback, Thank you :)