Presentation on theme: "CHINHOYI UNIVERSITY OF TECHNOLOGY"— Presentation transcript:
1CHINHOYI UNIVERSITY OF TECHNOLOGY CLASS PRESENTATIONGROUP 23
2GROUP MEMBERS FRANCISCA HORE C1111502B TENDAI ZHAKATA C1111188K CHENAIMOYO RUPENGA C HMIRIAM JONASI C EMIRIAM MANHEDE C JVONGAI CHAMBOKO C PVIMBAI MAPOSA C HGETRUDE NYABAKO C KMONICA NYANDORO C MFORTUNE MUVIRIMI C QOBRIEN MATENGAMBIRI C NETHEL MUDHINA C R
3QUESTIONSoft 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.REQUIREDprepareDocument flow chartContext diagramLevel zero of Data flow diagram
4FLOWCHARTSFlowcharts are documentation tools that summarise ideas that require many words to express.They are widely used by auditors and systems analysts
5a) Document flow chartA 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
6Document flow chart Usually show: Where the document comes from or its originWhere its distributedHow its usedIts ultimate dispositionEverything that happens as it flows through the system
8b) Context diagramIt is the highest level of data flow diagrams which provide the scope of the system being represented.BENEFITS OF THE DIAGRAMShows 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.
9DFD CONSISTS OF FOUR BASIC ELEMENTS Data sources and destinationsData flowsProcessesData stores
12What is a dataflow diagram These are graphical description of sources and destinations of dataWhere data comes fromHow it flowsThe process performed on itWhere it goes
13LEVEL ZERO DATA FLOWA level zero dataflow diagram is a projection of the process on the context diagram.
14Level zero data flow diagram accounts payablesubsidiary ledgercashdisbursement1.0Recording accounts payablesvendorinvoice4.0Posting disbursements3,oApproval, signing, cancellation of invoice2.0Cash disbursement processInvoice and chequeCancelled invoice