Month: February 2012

Object Diagrams with Multiple Inheritance

Below is an example of implementation of multiple inheritance – The Class ‘Universal’ inherits from two classes A/ and D/C, thus exhibiting multiple inheritance. Mutiple...

Abstraction

Abstraction may be defined as all those essential characteristics features of an object class which makes it different from other object classes. Abstraction as applied...

Multiplicity

Multiplicity refers to the number of object class instances of one class may be associated to the other class. An n+ symbol indicates that there...

Inheritance

Inheritance is the most basic feature of any Object Oriented programming language. It refers to the derivation of sub classes from a base/super class. The...

Qualification

Qualification is an association which involves an association and a qualifier which uniquely identifies certain features of one of the associated classes. Below example explains...

Object Modeling Technique (OMT)

Object Modeling Technique used in object oriented modeling and design which use the usual principles of system development like analysis, design an implementation but applying...

Instance Diagram

A sample instance diagram is as shown below. The diagram represents a expression evaluator –...