Guilford Department store is a Barbadian Company that operates in Bridgetown, Barbados. The Company maintains a perpetual inventory system. Its accounting information follows a number of standard operating procedures. Employees in the accounting department post the data manually from the receiving reports, materials requisition forms, copies of purchase orders and other transactions, such as returns and adjustments to the inventory records. The source documents are filed by posting date. The inventory records are analysed after each posting to determine if the item should be reordered. One copy of a purchase requisition is prepared and sent to the purchasing department.

The clerks select a vendor from a master vendor file, prepare four copies of the purchase order and update the vendor file to reflect the order. The purchase order is approved and distributed as follows: original copy to the vendor; copy number $2$ is filed numerically with the corresponding purchase requisition attached. Copy $3$ is forwarded to the receiving department. Copy $4$ is sent to the accounting department.

Answer the following questions:

$1.$ Create an in depth analytical flow chart of the preceding procedures at Guilford department Store Ltd$.$

$2.$ Create an in depth data flow diagram $($or DFD$)$ of the preceding procedures at Guildford$$s$.$