Relational Databases & SQL: Complete Guide for Developers (Udemy.com)
Learn Database Architecture, Data Modelling, MySQL, PostgreSQL with examples
Created by: Andrii Piatakha
Last updated November 2025
What you will learn
- Relational Databases
- Data Modelling
- Database Architecture
- SQL
- MySQL Server & MySQL Workbench
- PostgreSQL
- Database Normalization & Denormalization
- Database optimization
- Indexes in Databases
- JDBC
- DML
- DDL
- ORM/JPA
- Hibernate
- Spring Data JPA
- Spring JDBC
How it compares
Against the other 388 rated Udemy courses in SQL on CourseDuck:
- Rating4.5 out of 5higher than 48% of them
- Reviews579#196 of 389 by number of reviews
- Length15.1 hourslonger than 86% of them
- Last updatedNovember 2025more recently than 70% of them
Course Description
From this course, you can learn relational databases and SQL.
There are a lot of other courses on this topic. So, why would you choose exactly this course? Here are just a few reasons:
- Coding examples
To learn to program is not enough just watching videos and reading books. You also need to have a lot of practice. In this training course, you will review multiple practical tasks and coding examples which will help you learn and understand Java better.
- Open source code
We hide nothing from our students! Including the source code for the home task solutions and source code of examples that were shared during the lesson. Having the source code you can just copy and paste it to run it on your local computer to understand how things work better.
You are allowed to use all source code examples for learning purposes. This helps significantly to configure the environment and make tests work, especially in case students didn't work with any testing framework in the past.
- Q&A support
The significant difference between the online and offline learning process is the instructor's availability. If you are in one room with a tutor he always can help you to get understand the specific concept or to help fix your code on your computer.
In this course, we are supporting students with answers to any questions flagged in the Q&A section. In case there will be recurring questions - separate video lessons will be created to show how to address the issue.
So with this course you are not just getting video materials, code exercises, source code, access to the free mobile application without limits (which is still pretty cool, huh? :) ), but you also get tutor support and answers to your questions along with this course.
- Relevant knowledge
After our team investigated other Java courses on Udemy we realized that most of them have nothing in common with real life. The information which is shared there is very old and significantly out of date. For example, the instructor teaches a framework which is not been used already for 15 years. Or instructors do stress on the programming design which is not used anymore at all!
The instructor of this course is a consultant in a top-rated IT outsourcing company and helps to bring cutting-edge solutions in IT for all his clients. Feel free to check the LinkedIn page of the instructor and check skills endorsement. More than 19 thousand people across all over the world (BTW most of them are from the top 100 companies of the world) evaluated the skills of Andrii Piatakha.
With this course, you can be sure that you will spend your time learning the right things from one of the best IT consultants in the world.
- Free mobile App without limits for our students
Knowing Java is one skill. Be able to pass interviews in the company - that is another skill :) Nowadays a lot of companies use tests to select candidates on the first level of interview. We developed applications to practice skills specifically for such purposes.
In this course, we will provide you link to download our FREE mobile app for android. (soon it will be also available for iOS platforms)
The instructor of this course comes up with hundreds of tests that are used to test the knowledge of candidates. With this application, you will be well-prepared for the interview.
Also, only for our students - there is no limit on attempts to pass certification. In the course, we will tell you how to set up a special bonus code that will remove restrictions for our students inside the app.
- High concentration of useful material in each lesson
Sometimes you can notice that watching 5 minutes of our lesson is equivalent to watching another 30 minutes lesson.
This is because time spent for preparation for the lesson (script for the lesson, lesson structure) and video editing (to cut boring pieces of the lesson or time when the program loads) sometimes 10 times as much (sometimes even 20) as the final lesson duration after video editing.
Also, each topic is separated from another. In case some concept will be explained in the next lesson and you don't need to worry about understanding this in the scope of this lesson - the instructor will make an announcement when a specific topic will be covered.
Go and try it yourself! We will appreciate your feedback.
So don't wait! Take a look at the lessons' preview if you still have doubts!
Buy this course today, and you will get all updates for FREE!
For those who successfully passed this training course, or for students who were recognized for asking amazing questions, there is a special offer from the IT-Bulls company! The creator of this course is IT-Bulls company CEO and Founder. We are always in search of talents to run our amazing startups together with you. Probably you always dreamed about running your startup? In this course, you will be able to find the team who will teach you how to do that and (in particular cases) will be glad to help with implementation!
Hope you enjoy this course! And remember, we appreciate all your feedback! Your feedback will help us to become even better! Your feedback will help us to create to best Java course ever!
See you at the lessons! :)
Instructor Details
- 4.5 Rating
579 Reviews
Andrii Piatakha
Andrii Piatakha is a highly experienced educator, entrepreneur, project manager and software engineer with over 10 years of teaching experience and a proven track record of empowering students worldwide to achieve their goals in IT. As the Founder and CEO of IT-Bulls, Andrii has dedicated his career to promoting engineering excellence and shaping the next generation of IT professionals.
=== What Sets Andrii Apart? ===
Unparalleled Expertise
Andrii's career spans over a decade, during which he has mentored thousands of students and professionals. His hands-on experience as a software engineer and business leader allows him to deliver courses that are both practical and impactful. Andrii specializes in teaching Java, software architecture, cybersecurity, project management, web and application development, and more.
Transformative Education
Through his highly popular course “Java from Zero to First Job”, Andrii has helped countless individuals with no prior programming experience secure their first jobs in IT. This course is renowned for its structured approach, real-world projects, and ability to prepare students for success in the shortest possible time.
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Reviews
By Abilesh S on 7/28/2026
There was a lot of theory session it just made me lose interest but got a lot of deep insights in every topics
By Masood on 5/3/2026
Just what i wanted Everything at once. LOVED IT
By Sadhin Debnath on 11/14/2025
As a beginner, this SQL course was very helpful for me. The lessons were easy to understand, and the instructor explained every topic step-by-step. I learned how to write basic queries, use SELECT, WHERE, JOIN, and how to sort and filter data.
By Anonymized User on 10/2/2025
This course was really helpful. I learnt alot and are still implementing these concepts into my test projects. Many of the concepts i never knew but now i understand and grasp them thanks to this course. Only thing i can say is that i had a little issue sometimes understanding the way you speak but i got use to it over time. All in all 10/10 course.
By Hlengiwe Mthembu on 6/22/2025
I think he is doing his best the only way he knows how
By Alisa Herasymiv on 4/17/2025
The SQL course was very useful and interesting. I learned how to write basic queries and work with databases.
By Kyrylo Sukhota on 3/20/2025
- Pronunciation of teacher could be improved - It would be very helpful to use more illustrations, especially for abstract/complex topcis
By MohammadReza Fazli on 1/14/2024
if there was some questions after each lesson it would make it better i feel like I'm just seeing the videos and after a day I forget there is no training so far
By Christian Cullados on 12/20/2023
The teacher went above and beyond my expectations, I learned a lot from this course. Thank you!
By Prakash Kumar Mishra on 11/5/2022
Very easy and valuable section of this sigment of very clear
Quality Score
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Overall Score : 90 / 100












