Delete Order

Deleting an order is described in the above diagram. The user passes the purchase order number to the system. The system searches for the order corresponding to this purchase order number and flags it as inactive (deleted).

The returned status corresponds to the success of the operation. If the order is successfully flagged as deleted in the Order datastore, the status returns Successful.

P-Spec

Process ID	1.C.4
Process Name	Delete Order
Inputs	purchase order number
Outputs	None
Permissible User	Administrator, Salesperson
Assumptions	All information entered is syntactically correct.
Error Conditions	The Purchase order number entered does not exist. Successful

Data Elements (Data Dictionary)

Name	order
Kind	Data movement in DFD
Type	Instance of an Entity
Description	This data element corresponds to a complete instance of the Entity Order.

Name	purchase order number
Kind	Primary Key
Type	Integer
Description	The primary key attribute of entity Order. The maximum length is 8 digits. The format is the type integer. For example: 95822454 This number corresponds to a unique number which describes one purchase order made by a customer.

Name	status
Kind	Data movement in DFD
Type	Return Message
Description	This data element corresponds to an error message being returned from an operation. An error message may be both successful and unsuccessful. Unsuccessful error messages are further subcategorized into different errors based on the possible errors that can occur in an operation.