Express Learning - Introduction to Information Technology by Pearson

16

Database Management Systems

1. Differentiate among data, information, and knowledge.

Ans.:

Data

They can be defined as a set of isolated and unrelated raw facts, represented by values, which have little or no meaning, simply because they lack a context for evaluation. Usually, the values are represented in the forms of characters, numbers, or any symbol such as ‘Monica’, ‘35’, and ‘chef’. Note that although these words and numbers have certain meaning, it is difficult to figure out exactly what these values signify.

Information

When the data are processed and converted into a meaningful and useful form, they are known as information. Hence, it can be defined as a set of organized and validated collection of data. For example, ‘Monica is ...