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.”

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

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

Answer question 1-4 according case 1. PROCESS ANALYSIS (5 MARKS) Prepare a chronologically sorted table that summarises the case and clearly identifies: - The people involved - The activities being performed - The nature of data use (Input / Process / Output) - The logical DFD grouping 2. BPMN DIAGRAM PREPARATION (10 marks) Prepare a BPMN diagram that depicts what happens in the sales and cash receipts process. As part of the documentation you should include: A detailed BPMN diagram that clearly depicts: o WHO is performing the activity o The flow of activities throughout the process o WHEN things occur o Gateways that are part of the process o Data use o Document movement 3. LOGICAL DATA FLOW DIAGRAM (10 marks) Prepare a logical data flow diagram for the sales and cash receipts process 4. UML CLASS DIAGRAM AND ANALYSIS (10 marks) a) Identify FOUR (4) classes that would be needed to capture data for this process. Using these four classes: i. Show how they are related in a UML Class Diagram ii. Specify a possible primary key and foreign key (where needed) and three other attributes that would describe the class iii. BRIEFLY explain why each of these class relationships you have identified would be needed NOTE: YOU DO NOT HAVE TO DRAW A COMPLETE UML CLASS DIAGRAM – IT SHOULD ONLY CONTAIN FOUR (4) CONNECTED CLASSES case: This section contains the details of the operations of the Sales and Cash Receipts process at Neat Knits Winter 1 Wear, a specialist clothing store that sells a wide range of woollen products. The business was started in 1998, 2 when Peter and his wife Isabelle were enjoying a weekend at their small hobby farm in regional Victoria. 3 Looking at the green paddocks and the few merino sheep they kept, the idea of selling fine woollen products 4 was irresistible. After making a few enquiries, they found a high-quality supplier and entered into a supply 5 agreement with them in 1999, By early 2002 the business had established itself as a leading brand in both 6 casual and formal wear woollen items. The product range includes socks, jumpers, scarves, beanies, woollen 7 suits, gloves, and a range of recommended detergents and softeners for preserving the original pristine 8 condition of the clothing items that Neat Knits Winter Wear have for sale. 9 Each morning, at 7:45am, Peter arrives at Neat Knits and unlocks his office. As the Store Manager, Peter likes 10 to arrive at work early, so he has time to get ready for the day ahead. Part of his early morning duties include 11 getting the store set up for business. Pete retrieves the daily cash float from the safe and places it in the three 12 sales registers. He writes down the amount of cash placed in each register and keeps the record on his desk. 13 He opens the doors of the store at 9:00am and the day of trading commences. 14 The sales in the store are handled by the Sales Consultants. Each sales consultant is trained to know the 15 details of

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