A use case diagram for a railway management system

1. Login Add Account Update Account Details
Maintain login details Delete Account
View train schedules
Customer
Generate reports View station schedule
Administrator
View Reservation Status
<<extend>>
Fare calculation
<<extend>>
Reservation clerk
<<extend>> Ticket reservation
<<extend>>
E-ticket reservation
<<extend>>
Print tickets/E-tickets/receipts
<<extend>>
Ticket cancellation
<<extend>>
DEO
<<extend>>
E-ticket cancellation
Refund calculation
Add Station
Maintain train details
Add Train Details Update Station Details
Maintain Station details
Update Details Delete Station
Maintain Fare Details
Delete Train Details
Add Fare Details Update Fare Details Delelte Fare Details
File: D:Documents5th SemOOSE LabRMS.mdl 17:15:00 18 November 2011 Use Case Diagram: Use Case View / Main Page 1