====== Assignment 4 ======
====Due date: SUNDAY, July 21 2013 (11:59pm)====
<del>Due date: FRIDAY, July 19 2013</del>

  * [[http://www.cse.yorku.ca/course_archive/2012-13/S/3311/files/a4.pdf|Specification]]
  
===== Solution =====
==== Family ====
You can use a single class in a design and express everything else as has-a relations.
The other option is to create classes for MOTHER and FATHER, and DAUGHTER and SON and remaining as has-a relations.

==== Folders ====
A typical composite example where FOLDER is a container and inherits from FILE, and files can be placed in a container.

==== Dental ====
Key elements are:
  * PATIENT with a SET of TOOTH,
  * record of the operations performed on a TOOTH can be associated with a TOOTH or a PATIENT with a reference to the TOOTH, you should consider consequences,

Other design elements are quite obvious.

===== Resources =====
Cover Page: [[http://www.cse.yorku.ca/course_archive/2012-13/F/3311/report1/coverpage.pdf|pdf]] and [[http://www.cse.yorku.ca/course_archive/2012-13/F/3311/report1/coverpage.docx|doc]]