SQL and It’s uses

SQL Tutorials

SQL stands for the Structured Query Language. It is useful to know about SQL and what it does if you‘re interested in working with databases or applications that work with data. In this lesson you‘ll learn what SQL is and why developers use it.

SQL (structural query language) is a language that allows you to speak to a database. Rather than clicking a button or editing files, you use simple commands to tell the database what you want.

Using SQL, you are able to:
Create tables
Add data
View data
Update records
Delete records

Since SQL is made of plain English words it is very easy to see, understand and learn.

Why SQL Is Used

SQL is used as it makes data so easy to manage.

First, SQL allows you to get the information you need. You can search, filter and sort data in seconds, even if the database contains thousands or millions of records.

Secondly, SQL organizes data. It avoids errors such as repetition or no data by using tables and rules.

Third, due to its concurrency features SQL can support large numbers of users accessing the same data simultaneously, without problems.

SQL Saves Time and Effort

If there was no SQL, it would require a tremendous amount of work just to handle data. It would just mean looking through files one at a time, or building large programs to find straightforward data.

This is where SQL takes over. Instead of writing a lengthy program (as you would for the previous example), you can write a short query that will get you the result you were after. This means developers and data analysts spend less time and effort.

Where SQL Is Commonly Used

SQL is used in many real world systems, such as
Websites and web applications
Mobile apps
Banking and finance software
Online shopping platforms
Reporting and analytics tools

It is now an essential skill in light of the fact that a large number of systems rely on data.

SQL Works Across Databases

SQL is also popular because it runs on most database systems.

Once you learn SQL, you can use it with
MySQL
PostgreSQL
Oracle
SQL Server
SQLite

While there are small differences between each system, the basic principles of SQL remain constant.

Who Should Learn SQL

SQL is good for
Students learning programming
Web developers
Software engineers
Data analysts
Business professionals working with data

If you work with data in any form, you should learn SQL to increase your productivity.

Summary

SQL, the language used for working with databases.
It allows you to easily search, insert, update, and delete data.
Due to its simplicity, popularity and puissance, SQL is still a desirable skill.