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System definition and boundaries
Subsystems, environment,
connections, dependencies
Personnel
system
Rules,
contracts
Accounting and
bookkeeping
Payroll
Reductions, tax
Working time
Payments
Statistics
Rental car agency
Concept chart
Client
client makes
a reservation
a vehicle is
booked
Vehicle
different prices
client
receives an
invoice
Reservation
Price
Invoice
a reservation generates
an invoice
Information analysis: a reservation
•client information (name, address, credit card)
•vehicle category
•time needed
•reservation time
•pricing basis
Rental car agency: reservations
Database draft
vehicle
availability
reservation,
cancellation
client
entry &
update
reservation
update
Client
database
Name&
address&
card number
vehicle
update
Rentals
database
Vehicle
database
used &
uncancelled
Invoice
system
invoice
price
Process modelling
ACTIONS
Structural
diagram
Activity
diagram
Data
flow
diagram
State
diagrams
and events
Work
flow
diagram
Display
screens
DATA
Concept
chart
Program
structure
diagram
Data
stores
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