A. Output
✓ The inventory system must produce a daily report showing the quantity of the distributed ticket with their corresponding ticket numbers and a total amount of ticket sales.
✓ The system must have an employee record for management inspection.
✓ The purchasing system must have a valid transaction receipt for the customers view.
✓ The system must have a time reminder for every train arrival and departure.
B. Input
✓ Employees must enter their username and password for the logging in process.
✓ The ticket clerk must input the necessary data including the route of the passenger, quantity of their purchase and the time of their travel during the transaction.
C. Process
✓
D. Performance
✓ The system must be operational 7 days a week and 365 days a year.
✓ Respond time must not exceed 4 seconds.
✓ The system support only one user at a time.
✓ The system must have a daily update of the ticket sales.
E. Security
✓ The system must provide log on security.
✓ An employee record must be added, changed or deleted only by the chief of the station.
✓ Time, date, train schedule can only be change by the chief of the station.
II. Data Flow Diagram
A. Context Diagram
B. Diagram 0
C. Lower-Level Diagram
III. Data Dictionary
A. Elements
|Label |Type & Length |Source |Security |