December 2016
Intermediate to advanced
401 pages
16h 1m
English
Content preview from Software Engineering by Pearson
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72 Software Engineering
Figure 5.8 Physical DFD of withdrawal system of bank
1. Checking
by Clerk-1
2. Verify
signature by
Clerk-1
Ledger
Withdrawal
slip
Customer
Withdrawal slip
and passbook
Updated passbook
Payment
authorized
on slip
Payment
Token
Withdrawal
slip
Token
4. Authorize
payment by
Accountant
3. Update
account by
Clerk-2
5. Make
payment by
Cashier
An example of physical DFD is shown in Figure 5.8. It shows the process for withdrawal of money
from a bank by an account holder against a withdrawal slip. e DFD shows that the withdrawal slip is
processed at four diff erent desks (two clerks, one accountant, and one cashier).
e Physical DFD is very ...
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