Subject: Object Oriented Modeling and Design

Difficulty: Medium

Marks: 4 Marks

The following steps are performed to create Objects and classes.

1. Identify Objects and Classes From the detail statement of the problem, identify objects and classes as below:

   a. Physical entities such as houses, machines etc.

   b. Nouns such as tickets, systems etc.

   c. Materials such as books, records etc.

   d. Roles such as teacher, student, customer etc.

   e. Events such as interrupt, request, copying etc.

2. Prepare a data dictionary

3. Identify Associations.
4. Identify attributes of objects and links.
5. Organize and simplify object classes using inheritance.
6. Identify operations to be included in a class.
7. Verify that access paths exist for likely queries.
8. Iterate and refine the model.
9. Group classes into models.