Structured Query Language or SQL is a programming language used to manage data on a related website. SQL can be used to translate, insert and delete multiple records at once, in addition to other functions, and is a common language used for related website queries. It should take an average student two to three weeks to understand the basic concepts of SQL and begin working with SQL repositories. The future of SQL is truly bright, and many successful SQL professionals make sure they know everything about current website styles and stay informed about the technology market. SQL is one of the most important skills. One of the common ways to learn any skills is by taking up SQL courses online and earning SQL certificates for free. Learning SQL online has great benefits in this modern world of technology.
What is SQL?
SQL stands for Structured Query Language. SQL is used to create, delete, and modify database and web resources in a database management system and to store, retrieve, and update data on a website. SQL is the standard language for creating, accessing, and deciphering a website management system. SQL is a special feature of the programming language used to communicate with information sites. It works by understanding and analyzing information that includes data fields in their tables. For example, we could take a large organization where a lot of data should be stored and managed. SQL is an easy language to learn. If you understand editing or have knowledge about other programming languages, you can learn SQL easily. If you are a beginner at SQL and completely new to programming, it can take a long time.
Applications of SQL – Where is SQL used?
All applications are used to create a frontend or UI for end-users so that applications can capture all user interactions on the other side. You can use SQL with any application as a background. So when you use SQL as a backend, all user interaction data is stored in SQL. Before we look at the free SQL courses, let us take a look at a few features of SQL:
- SQL is used as a Data Definition (DDL) language, which means you can independently build a website, define it, use it and discard it once you are done with it.
- SQL has also been used as a Data Damage (DML) language, which means you can use it to store existing data storage. SQL is a powerful language for capturing data, editing data, and extracting data about a site.
- SQL is also used as a Data Controller (DCL) that specifies how you can protect your data from fraud and misuse.
- SQL is widely used as the Client / Server language to connect the front and back area, thus supporting client/server configuration.
- SQL can also be used to build three client categories, an application server, and a website that defines the design of the Internet.
Also Read: SQL Interview Questions and Answers in 2022
Top Nine SQL Courses
Here is a list of the top free SQL Courses for you to upskill and power ahead your career.
1. Introduction to SQL
Structured Query Language or SQL is a programming language that is used to manage database management systems. In today’s world, there is an increasing amount of data being generated. Management of this data is crucial because data in its raw form is not comprehensible. Data must be organized and made sense of to be made useful. SQL involves the management, organization, retrieval, manipulation, and storage of data.
In this Introduction to SQL Free Online Course, you’ll learn the basics of SQL, how to create a database with the help of SQL, different ways to maintain a database, and how we can fetch data from the database with the help of SQL. It is a beginner-friendly course and will lay the foundation required for you to learn the advanced concepts.
2. Advanced SQL
If you know the basics of SQL and wish to learn the advanced concepts, you’re in the right place! This Advanced SQL Free Online Course is specially designed for the intermediate level and covers the concepts required for you to power ahead in your programming career. The course starts by teaching you concepts to help understand DBMS, its history, types, advantages, etc. Some of the other concepts covered are:
- Subquery in SQL
- SQL Case Statement
- View in MySQL
- Pattern Matching in MySQL
3. SQL with Python
Python is one of the most widely used programming languages today since it is user-friendly and accessible to users. And data is being generated on a large scale. So how do these two points relate? It’s because Python can also be used in database applications! SQL is a widely used database management system. In this online course, we’ll be learning about how SQL can be used to manage the large amounts of data available to us and gain an understanding of how Python can be used with SQL. The SQL with Python session is for beginners and is free of cost.
4. SQL Interview Questions and Answers
Data management has become essential in all areas of business. Having an understanding of SQL and learning DBMS can help you advance your career. If you are applying for a new job and wish to prepare well for the SQL Interview Questions and Answers, this free online course will help you familiarize yourself with the important interview questions.
This free online SQL interview questions and answers course will teach you concepts such as SQL Queries, Normalization, E-R Diagram, Sub-queries, and more. You will gain hands-on learning experience by working on projects such as HR DBMS and Broadband Management System. Attend your upcoming interview with confidence by taking up the free online course and enhancing your knowledge about SQL.
5. SQL Projects for Beginners
If you’re typing to build your resume and gain hands-on experience through SQL projects, taking up a SQL Projects for Beginners Free Online Course will help you learn the required skills. This course will help you enhance your knowledge of DBMS and RDBMS. You will also work on a bank database project to improve your skills in relation to SQL queries. The course also offers source code for the same. It has been designed for beginners and will help you understand how to handle a large database.
6. SQL for Data Science
The amount of data generated has rapidly increased, and with this, so has the need to manage and store this data. Companies are moving towards being data-driven and this is where data science and database management systems come into play. DBMS helps us keep data in an organized manner. Take up this SQL for Data Science Free Online Course and learn about the most popular programming language along with excellent DBMS tools, and how SQL can be used in Data Science. The course has been designed for an intermediate skill level and will help you learn about emerging fields and upskill. Knowing the basics of MySQL is a prerequisite to taking up this course.
7. Analytics with SQL and Python
Python has easy-to-use syntax, a fantastic flow, and various data analysis frameworks that allow us to analyze a large amount of data. Python can be scaled up to work with huge amounts of data efficiently. In this Analytics with SQL and Python Free Online Course, you will learn about Python Analytics and SQL Analytics.
It aims to provide you with content that helps in understanding the practical usage of SQL to solve data analytics problems. You will be working with real-life datasets for the analysis and to gain a hands-on learning experience. Some of the skills you will gain by the end of this course are:
- Data Analysis with Python
- SQL hands-on session
- Demonstration with FIFA dataset
- Demonstration with IPL dataset
8. Joins in SQL
A join is a way of combining data from two or more tables into a single row. Joins are used to create a master list of data from multiple tables. With an ever-increasing need to store, manage, and organize data, SQL is extremely essential to learn. In this free online course on Joins in SQL, you will learn about the term joins and how it can be used. The course is beginner-friendly and will help you learn the concept clearly with the help of examples.
9. Oracle SQL
Oracle Basics is a free course that will help you understand Oracle DBMS in-depth. We will start off with an introduction to DBMS, understand the difference between data and databases, learn how to create tables, store data in the tables, and learn about core SQL concepts such as how to write queries, and how to use SQL commands, and so much more. Some of the key concepts covered in this course are:
- Introduction to DBMS
- Creation of Table
- Oracle Setup and Installation
- Relational Model in Oracle
- Miscellaneous Topics in Oracle
- Operators as Keywords in Oracle
- Functions in Oracle
- Clauses in Oracle
- Nested Query in Oracle
- Joins in Oracle
- SQL Commands in Oracle
- Database Objects in Oracle
Conclusion
SQL is an international language that can help you develop your skills to be specialized as an editor, developer, manager, and more. The language used in most related storage systems and exits is available in some informal or informal programs. SQL is easier to read than other programming languages, such as Java and C ++, and it helps you manage large volumes of data.
You can query a million lines of data using simple SQL commands.SQL lets you measure and customize your data. SQL allows you to combine data from multiple sources and perform analysis on it. We hope you found this blog on the top SQL courses helpful!
