Free Udemy Course 2026: Complete Database Course: SQL, MySQL, PostgreSQL & MongoDB

This course is a complete guide to SQL, MySQL, PostgreSQL, MongoDB, and Database fundamentals, designed for anyone who wants to understand how modern databases work. Whether you are a beginner or an aspiring developer, analyst, or administrator, this course will help you build a strong foundation in both relational and NoSQL database systems.You will start by learning SQL and core database concepts such as tables, relationships, keys, and queries. You’ll understand how data is stored, retrieved, and managed efficiently. These fundamentals apply across all major database systems and are essential for working with MySQL and PostgreSQL.Next, the course dives into MySQL and PostgreSQL, two of the most popular relational database management systems. You will learn how to create databases, write advanced SQL queries, perform joins, use indexes, and manage data securely. You’ll also understand the similarities and differences between these systems and when to use each one.The course also introduces MongoDB, a leading NoSQL database. You will learn how document-based databases work, how to store and query data using collections, and how MongoDB differs from traditional SQL databases. This knowledge will help you design flexible and scalable database solutions.Throughout the course, you will gain practical, hands-on experience with key skills including:Writing efficient SQL queriesDesigning and managing databasesWorking with MySQL and PostgreSQL in real projectsUnderstanding NoSQL concepts with MongoDBApplying best practices for database performance and securityBy the end of this course, you will be able to confidently work with SQL, MySQL, PostgreSQL and MongoDB to design, manage, and query databases. You will understand how to choose the right database solution for different applications and how to apply your skills in real-world scenarios.This course is ideal for:Beginners learning databases for the first timeDevelopers and analysts who want stronger database skillsStudents preparing for database-related rolesAnyone interested in mastering SQL and modern database systemsEnroll now and start mastering SQL, MySQL, PostgreSQL, MongoDB, and Database fundamentals through clear explanations, practical examples, and hands-on learning.