Subject: Object Oriented Modeling and Design

Difficulty: Medium

Marks: 4 Marks

Modeling is a central part of all activities that lead up to the deployment of good software. It is required to build quality software.

Importance of Modeling:

• Modeling gives graphical representation of system to be built.
• Modeling contributes to a successful software organization.
• Modeling is a proven and well accepted engineering technique.
• Modeling is not just a part of the building industry. It would be inconceivable to deploy a new aircraft or an automobile without first building models-from computer models to physical wind tunnels models to full scale prototypes.
• A model is a simplification of reality. A model provides the blueprint of a system.
• A model may be structural, emphasizing the organization of the system, or it may be behavioral, emphasizing the dynamics of the system.
• Models are build for better understanding of the system that we are developing:

a. Models help us to visualize a system as it is or as we want it to be.

b. Models permit us to specify the structure or behavior of a system.

c. Models give us a template that guides us in constructing a system.

d. Models support the decisions we have made.