Question

Explain Basic Characteristics of Object Oriented System Analysis & Design.

Answer 1

In object-oriented approaches, the focus is on capturing the structure and behavior of information systems in small modules that include data and processes. The main goal of Object Oriented Design (OOD) is to improve the quality and performance of systems analysis and design by making it more usable.

The OO model is used in the analysis phase to fill the gap between the problem and the solution. It works well in situations where systems are under continuous design, adaptation and maintenance. It identifies objects in areas where their classification problems are related to data and behavior.

The OO model is useful in the following ways:

    It facilitates system changes at less cost.

    It encourages reuse of components.

    This simplifies the problem of integrating components to configure large systems.

    Simplify the design of distribution systems.

The elements of the object-oriented system

Let's take a look at the features of the OO system -

    Object - An object is an object that exists in a problem area and can be identified by data (attributes) or behavior. All monetary objects (students, patients) and some intangible entities (bank accounts) are modeled.

    Attributes - They describe object information.

    Attitude - It defines what an object can do. It defines the operation performed on the object.

    Class - The class covers the data and its behavior. Objects with similar meaning and purpose are grouped together.

    Method - The method defines the behavior of the class. They are nothing more than actions that objects can take.

    Message - A message is a call to a function or procedure from one object to another. They are information that is passed on to the object to trigger the method. Message content is a call to a function or procedure from one object to another.