SQL (pronounced "ess-que-el") stands for Structured Query Language. SQL is used to communicate with a database. According to ANSI (American National Standards Institute), it is the standard language for relational database management systems. SQL statements are used to perform tasks such as update data on a database, or retrieve data from a database. Some common relational database management systems that use SQL are: Oracle, Sybase, Microsoft SQL Server, Access, Ingres, etc. Although most database systems use SQL, most of them also have their own additional proprietary extensions that are usually only used on their system. However, the standard SQL commands such as "Select", "Insert", "Update", "Delete", "Create", and "Drop" can be used to accomplish almost everything that one needs to do with a database.
if you are a computer science graduate or new into the programming world and interested in learning Database and, SQL and looking for some awesome , courses, and tutorials to start with, then you have come to the right place.
In this article, I'll share free courses which will help you to learn the basics of SQL and Database. You will learn how to write SQL queries, both basic and advanced e.g. using joins and aggregate functions etc
1. Introduction to Databases and SQL Querying
The first course I would recommend to you, which I feel is best for beginners . This is an introductory course on Databases and SQL Querying. There are no pre-requisities for this course. If you are looking to get acquainted with the concept of Databases and Queries for maybe your next interview as an analyst, this is the right course for you. All you need is a windows machine and we will walk through step by step, right from setting up your environment to creating your first table to writing your first query. This course is structured in a way that you can follow along with me. At the end of this course, you should be comfortable writing simple queries including queries related to Dates, String manipulation, Aggregation etc.
2. Advanced Databases and SQL Querying
This course is an advanced TSQL Querying course. The course expects that student are already aware of basic database concepts and are comfortable writing basic TSQL queries like SELECT, JOINS etc. Students are expected to have taken my previous course (Introduction to databases and Querying). This course cover advanced concepts like Views, Triggers, Dynamic Queries etc. The TSQL Scripts for all demos are uploaded. The course about 2+hours and has assignments at the end of each concept.
If you looking for your next database job or trying to improving your existing database knowledge and apply in your projects, this is the course for you.
3. SQL: The Hitch Hikers Guide To Writing SQL Queries
Welcome, this is a SQL course that I am sure you will complete and benefit a lot from. The course is aimed at Beginners to Intermediate levels.It covers all the bases for you to get up to speed with writing SQL before you progress on to more advanced SQL for transforming and analysing data.I will explain everything step by step and in detail so you get to know SQL very well.
The course uses SQLServer 2014 express, and we all know the popularity of SQL Server and the thousands of enterprises that use it.
4. Oracle SQL - A Complete Introduction
This course will teach you the basics of the SQL language on an Oracle database.
In this course, you will learn how to write basic SQL statements to view data, insert data, update existing data and delete data in a database.
It's perfect for a beginner or first-timers who have no idea about database or SQL and want to learn these skills using Oracle database.
5. Database Design
This course will cover design concepts for all relational database management systems. This is an ideal course for developers who write SQL code and have at least a year of SQL experience and if you are thinking to become a DBA.
Conclusion
Those are some of the best free online courses to learn about the fundamentals of databases and SQL I'd like to send to you . These are excellent SQL courses for both beginners and experienced programmers who don't know SQL.
Finally, we need to thank the many authors for providing and sharing free courses with the community. I hope you can achieve your goal of improving SQL
Thanks for reading !
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