Assignment NO #3

Solution;

a.      What system analysis technique is most suitable to present the above process in a pictorial form to show the sequences of activities, decisions, and results?

 

Ans; Data Flow Diagram (DFD) is a graphical representation of the flow of data through an information system is most suitable to represent the above process in pictorial form to show the sequence of activities, decisions and results.

  1. Enlist all the components, symbols, and meanings used in above technique.

Question 2

Part a Solution:

The word polymorphism means having many forms. In simple words, we can define polymorphism as the ability of a message to be displayed in more than one form. Real life example of polymorphism: A person at the same time can have different characteristic. Like a man at the same time is a father, a husband, an employee.

In object-oriented programming, polymorphism (from the Greek meaning "having multiple forms") is the characteristic of being able to assign a different meaning or usage to something in different contexts - specifically, to allow an entity such as a variable, a function, or an object to have more than one form.

Encapsulation

Encapsulation means information hiding. For instance, when the Play Button is pressed, the tape is played. However the actual process of how the tape is played is not visible. Another example can be given of banking software. The banking software contains an option of computation of profit, when the option is activated the amount is computed as and when required, however, the actual steps when performed remain invisible to the user.

Polymorphism 

Following example will help understand the concept in a better

Complete Solution in File . Download from here.

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Manner;

Hence based on the example given above, the concept can be defined. Polymorphism is a derived from Greek language meaning "having multiple forms"). Polymorphism is the characteristic of being able to assign a different meaning or usage to something in different contexts - specifically, to allow an entity such as a variable, a method, or an object to have more than one form. 

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