Introduction to Pathmaker

Overview of Pathway
Introduction to Pathmaker and Pathway
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Figure 1-5. Requester-Server Application
Vehicle Registration Application
Terminal Management Database Management
1. Display blank vehicle
registration screen.
2. Accept new vehicle data
and perform preliminary
input validation.
3. Send request with vehicle
data.
8. Display “Vehicle Added”
message on screen.
4. Appropriate server
receives request
message and data.
5. Service (a portion of
a Pathmaker server)
performs complex data
validation.
6. Service updates database
with vehicle data.
7. Reply to requester to
confirm successful add.
Vehicle
Owner
License
Display
Screen
Accept
Commands
and Data
Send
Request
Return
Reply
IPC messages
Database
Write
Read
Server
005
Requester
Service
Service 3
Service 2
Service 1