Post date: Friday, November 21, 2014 - 15:30
Updated date: Friday, September 18, 2015 - 15:27
In summary, the answer to this question is: because unlike the general concept of an object type or class, the general concept of an association, as defined by UML, does not have a direct computational counterpart, neither in common object-oriented (OO) programming languages, nor in SQL.
Post date: Monday, November 17, 2014 - 17:44
Updated date: Friday, September 18, 2015 - 15:29