CLASS PRESENTATION
GROUP
23
GROUP MEMBERS
 FRANCISCA HORE
 TENDAI ZHAKATA
 CHENAIMOYO RUPENGA
 MIRIAM JONASI
 MIRIAM MANHEDE
 VONGAI CHAMBOKO
 VIMBAI MAPOSA
 GETRUDE NYABAKO
 MONICA NYANDORO
 FORTUNE MUVIRIMI
 OBRIEN MATENGAMBIRI
 ETHEL MUDHINA
C1111502B
C1111188K
C1111623H
C1111459E
C1111049J
C1111514P
C1111324H
C1111671K
C1111788M
C1111607Q
C1111582N
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
a) Document flow chart
b) Context diagram
c) 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
vendor
Cash
disbursement
treasurer
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


vendor
invoice

1.0
Recording
accounts
payables
accounts payable
subsidiary ledger
4.0
Posting
disbursements
3,o
Approval,
signing,
cancellati
on of
invoice
Invoice and
cheque
Cancelled
invoice
2.0
Cash
disbursement
process
cash
disbursement
THE END