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SQL vs NoSQL: Choosing the Right Database (and Learning Paths for MySQL, SQL Server, PostgreSQL, Oracle, and MongoDB)
Understand SQL vs NoSQL, compare databases, and learn how to choose the right solution for scalability, consistency, and performance.
Database Transactions Explained: ACID, Isolation Levels, and Concurrency Control Across SQL and NoSQL
Learn database transactions, ACID, isolation levels, locks, MVCC, and concurrency control across SQL and NoSQL systems.
Database Schema Design for Real Projects: From Requirements to Reliable Models
Practical guide to database schema design: requirements, keys, relationships, constraints, migrations, and reliable models for real projects.
Database Normalization, Denormalization, and When to Break the Rules
Learn database normalization and denormalization with practical rules for designing cleaner schemas, avoiding anomalies, and improving performance.
Database Indexing for Backend Developers: Make Queries Fast Without Guesswork
Learn practical database indexing for backend developers to speed up queries, improve joins, optimize pagination, and reduce API latency.
AI in the Real World: Building Reliable Systems from Data to Decisions
Learn how real-world AI systems go from data to decisions with reliable modeling, deployment, monitoring, and responsible AI practices.
An Introduction to PostgreSQL: Powerful Open Source Relational Database
Discover PostgreSQL, a powerful open-source relational database. Learn its features, benefits, and why it’s ideal for modern applications and scalable systems.
Exploring PostgreSQL Extensions: Unlocking Advanced Database Functionality
Unlock PostgreSQL’s full potential with extensions. Learn how to add features, improve performance, and customize your database for advanced use cases.
Explore a focused learning path in Database education with beginner-friendly online courses designed to build practical data skills. This course listing page brings together essential topics in relational databases and NoSQL databases, helping you understand data modeling, querying, and database administration fundamentals through structured e-learning content. All courses are 100% free, and a free digital certificate of completion can also be issued when you finish the training.
Start your database learning journey with MySQL, one of the most widely used SQL database systems in academic and professional environments. This beginner course introduces core database concepts such as tables, primary keys, relationships, and normalization, along with SQL language fundamentals for data retrieval and manipulation. You will practice essential SQL queries, learn how to design a simple relational schema, and understand how to work with structured data in real-world scenarios. The course is free, and you can request a free digital certificate after completing the lessons.
Build foundational knowledge in SQL, understand database structure, practice querying with SELECT/WHERE/JOIN concepts, and develop beginner competency in relational data modeling and MySQL usage for educational projects.
Learn the basics of MongoDB, a leading NoSQL database used for modern applications and flexible data storage. This beginner-level course focuses on document-oriented databases, collections, JSON-like documents, and the fundamentals of CRUD operations. You will gain introductory skills in schema design for NoSQL, indexing basics, and querying data efficiently—ideal for learners moving into data engineering, backend development, or database management studies. The course is free, and a free digital certificate of completion can be issued.
These free online courses are suitable for students, career starters, and self-learners seeking structured database training, including anyone preparing for entry-level roles or building a portfolio with verifiable learning outcomes.
Browse the free Database course catalog and begin learning today with free certification included.
All our courses are free from start to finish, the student does not pay any kind of fee to study, so we are a course platform accessible to everyone.
In addition to taking the course for free, you also receive the Certificate for free.
Some of our courses have exercises produced exclusively for our platform, helping you to practice the knowledge acquired in the course.
Only by downloading the Cursa application you have access to receive the digital certificate for free, in addition to several other exclusive features, download at Google Play or at App Store ( Apple ).
In all, there are more than 1000 courses, divided into more than 400 categories in 5 different languages, where we provide the digital certificate for free to everyone.
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After completing the course you will have free access to the digital certificate of course completion.
How to get it for free: It is only possible to issue the certificate in our application, which can be downloaded from Google Play or App Store, so you can take the online course here and use the app only to issue the certificate. Being that you can also take the courses through the app if you wish.
In digital format: After completing the course and generating the certificate through the application, the image of the same will be generated in the photo gallery of your cell phone and will also be sent to your email.
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What are people saying about free online courses of Database
Deepak Patel
my SQL DATABASE for beginners by cs geeks course is simple and super course for beginner students course is herfully and all concepts is very simple
CourseMySQL database for beginner