During the analysis of an online shopping system, the team identifies a function that checks the availability of items in the inventory. In the context of a DFD, how should this functionality be represented?*EntityProcessData storeData flow

Identify the Data Flow Diagram (DFD) elements in the following narrative: “Henk buys a new bicycle at a local shop and pays with his debit card. After confirming the payment, the sales clerk gives an invoice to the customer. A copy of the invoice if kept in the invoice file. The sales clerk then enters the transaction into the sales file. At the time of closing, the sales clerk retrieves all transactions made during the day and gives the report to his manager.”

The ordering system of a company works as follows;When customers place orders on the company’s Web site, the system checks if the items are in stock, issues a status message to the customer, and generates a shipping order to the warehouse that fills the order. When the order is shipped, the customer is billed. The system also produces various reports to the management.(i) Draw the Context Diagram for the above order system.(ii) Identify two (2) possible sub-processes in the Level 0 DFD of the above system.

What is the purpose of a Data Flow Diagram (DFD) in software design?

Draw a context diagram DFD for a situation involving the processing of payroll transactions, where the external entities are: • employees (who receive paychecks and earnings statements and submit time cards signed by supervisors) • managers (who receive labour distribution summaries and earning reports) • the personnel department (which receives a payroll register prepared from a computer processing roll and submits personnel action forms to interested parties) • government agencies (which receive payroll tax reports), and • the bank (which receives a payroll transfer check deposited into the firm’s account to pay the current period’s payroll, a deposit slip, and a cash amount withheld from employees for payroll taxes that agrees with the total payroll).

What does a Data Flow Diagram (DFD) represent?Options :Control flow between modulesData movement and transformationLayered structure of the softwareObject interactions