January 2012
Beginner
408 pages
14h 34m
English
Content preview from Express Learning: Introduction to Information Technology
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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 ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.