Data, information and knowledge – these three terms are used frequently day-to-day.

The main difference between the three is the level of abstraction. Data is the least abstract concept, followed by information and then knowledge. The length of the River Ganges is a piece of data; a book about the River Ganges regarding the states of India it flows through, the cities that lie on its banks and the reasons it is considered holy by many people is information; and a report detailing how to utilize the river water for irrigation is a matter of knowledge.

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