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CLASS PRESENTATION GROUP23. GROUP MEMBERS FRANCISCA HOREC1111502B TENDAI ZHAKATAC1111188K CHENAIMOYO RUPENGAC1111623H MIRIAM JONASIC1111459E MIRIAM MANHEDEC1111049J.

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Presentation on theme: "CLASS PRESENTATION GROUP23. GROUP MEMBERS FRANCISCA HOREC1111502B TENDAI ZHAKATAC1111188K CHENAIMOYO RUPENGAC1111623H MIRIAM JONASIC1111459E MIRIAM MANHEDEC1111049J."— Presentation transcript:

1 CLASS PRESENTATION GROUP23

2 GROUP MEMBERS FRANCISCA HOREC B TENDAI ZHAKATAC K CHENAIMOYO RUPENGAC H MIRIAM JONASIC E MIRIAM MANHEDEC J VONGAI CHAMBOKOC P VIMBAI MAPOSA C H GETRUDE NYABAKO C K MONICA NYANDORO C M FORTUNE MUVIRIMI C Q OBRIEN MATENGAMBIRI C N ETHEL MUDHINA C R

3 QUESTION Soft data, a vendor, sends an invoice to Accu flow for data warehousing support services. The in voice is sent directly to Megan waters, the accounts payable clerk, who manually records the invoice in the accounts payable subsidiary ledger. Once the invoice is recorded it is forwarded to Stan Phillips, the cash disbursement clerk for processing. Stan prepares the cheque to pay the invoice and sends the cheque to John Sterling, the company’s treasurer. John approves and signs the cheque and cancels the in voice. John then mails the cheque to soft data and returns the cancelled invoice to Stan for recording in the cash disbursement journal and filling. Once a week Megan manually posts disbursements from the cash disbursement Journal to the accounts payable ledger. REQUIRED prepare a) Document flow chart b) Context diagram c) Level zero of Data flow diagram

4 FLOWCHARTS Flowcharts are documentation tools that summarise ideas that require many words to express. They are widely used by auditors and systems analysts

5 a) Document flow chart A document flow chart shows the physical flow of documents between organization units and information among areas of responsibility in an organization. It traces the movement of documents for example internal memos, payroll information, inter office mails and invoices through a system

6 Document flow chart Usually show:  Where the document comes from or its origin  Where its distributed  How its used  Its ultimate disposition  Everything that happens as it flows through the system

7 DOCUMENT FLOWCHART

8 b) Context diagram It is the highest level of data flow diagrams which provide the scope of the system being represented. BENEFITS OF THE DIAGRAM Shows the scope and boundaries of a system at a glance including the other system that interface with it. No technical knowledge is required to understand the diagram. It is easy to draw and amend due to its limited notation. Can benefit a wide audience into stakeholders business analysts developers.

9 DFD CONSISTS OF FOUR BASIC ELEMENTS Data sources and destinations Data flows Processes Data stores

10 CONTEXT DIAGRAM vendor Cash disbursement

11 Context diagram vendor Cash disbursement treasurer

12 What is a dataflow diagram These are graphical description of sources and destinations of data Where data comes from How it flows The process performed on it Where it goes

13 LEVEL ZERO DATA FLOW A level zero dataflow diagram is a projection of the process on the context diagram.

14 Level zero data flow diagram accounts payable subsidiary ledger cash disbursement vendor invoice 1.0 Recording accounts payables 2.0 Cash disbursement process Invoice and cheque Cancelled invoice 3,o Approval, signing, cancellati on of invoice 4.0 Posting disbursements

15 THE END


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