CS-16 Object Oriented Systems Dec -2003
Qus 5(a) A directory file contains information about files in a directory, including both ordinary files as well as other directory files. Prepare an object diagram which models directory files and ordinary files. Since a directory plus a filename uniquely identifies a file, you may use a filename as a qualifies.
Qus 5(b) Prepare a portion of an Object Diagram for a library Book Check Out system that shows the date a book is due and the late charges for an overdue book as derived objects.

