CHINHOYI UNIVERSITY OF TECHNOLOGY CLASS PRESENTATION GROUP 23
GROUP MEMBERS FRANCISCA HORE C1111502B TENDAI ZHAKATA C1111188K CHENAIMOYO RUPENGA C1111623H MIRIAM JONASI C1111459E MIRIAM MANHEDE C1111049J VONGAI CHAMBOKO C1111514P VIMBAI MAPOSA C1111324H GETRUDE NYABAKO C1111671K MONICA NYANDORO C1111788M FORTUNE MUVIRIMI C1111607Q OBRIEN MATENGAMBIRI C1111582N ETHEL MUDHINA C1111309R
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 Document flow chart Context diagram Level zero of Data flow diagram
FLOWCHARTS Flowcharts are documentation tools that summarise ideas that require many words to express. They are widely used by auditors and systems analysts
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
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
DOCUMENT FLOWCHART
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.
DFD CONSISTS OF FOUR BASIC ELEMENTS Data sources and destinations Data flows Processes Data stores
CONTEXT DIAGRAM vendor Cash disbursement
Context diagram Cash disbursement treasurer vendor
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
LEVEL ZERO DATA FLOW A level zero dataflow diagram is a projection of the process on the context diagram.
Level zero data flow diagram accounts payable subsidiary ledger cash disbursement 1.0 Recording accounts payables vendor invoice 4.0 Posting disbursements 3,o Approval, signing, cancellation of invoice 2.0 Cash disbursement process Invoice and cheque Cancelled invoice
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