PLEASE DO READ THE INSTRUCTION BEFORE BID , THANKS
Problem: Design an
access card system for a building
This building requires access cards to
enter its front door. A card reader will read the access card, get the card information,
check whether the card has permission to enter, and then ask the cardholder to
enter the password. If the card has permission and the corresponding password
is correct, the card reader sends signals to open the door and records the time
of entry. Otherwise, the card reader does not open the door and records the attempt
The cardholders include students, professors
and technicians. Different types of cardholders have different card functions. The
students only have basic functions: to access the building, and change their personal
information (including passwords). The professors have the basic functions and can
check the building entry information. The technicians have the basic functions;
can check the building entry information, and give/cancel permissions to the student
cards and professor cards.
1. Draw the design class diagram. In the diagram, include
card holder class, student class, professor class, technician class, and/or
other necessary classes.
2. Draw the sequence diagram for the use case of
"access the building".
Draw a complete design class diagram with stereotype name and all applicable notations (e.g. visibility).
Use appropriate drawing software
(e.g. Visio, Power point)