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SQL Tutorial for Beginners to Advanced

 


SQL Hands on Tutorial




SQL Tutorial for Beginners to Advanced

If you want to work in the IT industry, at some point you will need to learn how to use SQL and RDBMS databases. Every application uses data in every possible way. This tutorial is designed for beginners and provides a solid grounding in understanding this language. It covers everything from the basics of what SQL is used for, all the way through how it works and why! This tutorial strives to be as beginner-friendly as possible. You will learn about data types and operators, basic SELECT queries, how to work with tables and views in multiple RDBMS. This tutorial is useful for both beginners and anyone who needs to brush up on their skills.


What is SQL used for?

First, let's start with what SQL is used for. As you may know, SQL is a standard database query language that's used to interact with databases. It stands for Structured Query Language and was created in the early 1970s by IBM. SQL can be used to create, read, update and delete data from relational databases. It's an invaluable skill for anyone working in the IT industry.


What type of application uses SQL?

Almost every type of application uses data in some way or another. SQL is used to query, update and interact with that data. Whether you're working on a website, mobile app, online reservation, banking, insurance application and many more.


What is Data Definition language in SQL?

The Data Definition language (DDL) in SQL is used to manipulate the structure of a database. This includes creating, deleting or altering objects such as tables and views.

What is Data Manipulation Language in SQL? The Data Manipulation Language (DML) in SQL allows you perform queries against your data stored within an RDBMS


What is Data Control Language in SQL?

The Data Control Language (DCL) in SQL is used to manage the security of a database. This includes granting and revoking privileges for users, setting up roles and defining permissions.


How does SQL work?

SQL is a standard language that can be used to interact with any relational database. It's made up of two parts: the Data Definition Language (DDL) that allows you to define or alter your database structure, and the Data Manipulation Language (DML), which is used to query data.


What are DDL & DML statements?

DDL and DML statements can be combined. The most common statement is the SELECT, which is used to query data in an RDBMS. There are also INSERT, UPDATE and DELETE statements that allow you to insert (ADD), update or delete rows in a table respectively.

Why do we have to learn SQL?

SQL is an essential skill for anyone working in the IT industry. It's a standard database query language that can be used to interact with any relational database. This makes it a valuable tool for managing data and retrieving information


How easy is to get job after SQL training?

With an understanding of SQL, you have the skills to get a job in many different industries. This means that after learning SQL, your options are wide open. If you're interested in furthering your career with certifications like MCDBA (Microsoft Certified Database Administrator), then this is great news! By getting certified, employers will know that you have the skills and knowledge to manage their databases.

So, there you have it! If you're looking for a comprehensive tutorial on SQL that's easy to follow, this is it! The Ultimate SQL Tutorial for Beginners. In this tutorial, we've covered everything from what SQL is used for, all the way through how it works


How much is the salary for SQL developers?

The median salary for a SQL developer is $82,000 according to google and other job sites. In some part of USA, SQL developer makes as much as $140,000.


How many job opening exists for SQL?

There are more than 25,000 job opening for sql.

What is the future of SQL?

SQL has seen a significant growth over the past few years and this trend doesn’t seem to be slowing down anytime soon. With several new enhancements being released in 2018, it seems likely that we will see even more apps and websites using SQL and an increase in the number of job postings.


More Articles to come!

I will be creating multiple articles and technical hands-on videos in the youtube channel on RDBMS which will include SQL Server, Oracle Database, MySQL, and MariaDB. Subscribe to my youtube channel for upcoming updates.

Thank you for reading! I hope this article was helpful. If you have any questions, please let me know in the comments below. Stay tuned for future articles!

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