SQL Primer: An Accelerated Introduction to SQL Basics

©  Rahul Batra 2018

Rahul BatraSQL Primerhttps://doi.org/10.1007/978-1-4842-3576-8_1

1. An Introduction to SQL

Rahul Batra¹ 

(1)

Gurgaon, Haryana, India

 

Modern society is driven by data. Whether it is at a personal level, like a notebook containing scribbled notes; or at a countrywide level like Census data, it has permeated all our workflows. There is always a growing need to efficiently store and organize it so that meaningful information can be extracted out of raw data.

A database is nothing but a collection of organized data. It doesn’t have to be in a digital format to be called a database. A telephone directory is a good example, which stores data about people and organizations with a contact number. A to-do list is also a rudimentary form ...