“The course structure saved me weeks. I recommend it to any dev who wants to level up.”
Sarah M.
Backend developer, Paris
Data
Data & SQL Mastery for Java
4.7(93 reviews)
4-5 weeks
Intermediate
119,00 €one-time payment
Data is at the heart of every application. This course deepens SQL, schema design, indexing, and data access patterns in Java. You will learn to write performant queries, optimize indexes, manage migrations, and build reliable repositories. The final project is to refactor and optimize an existing data layer.
Technologies
PostgreSQLJPAHibernateFlyway
What you will learn
Advanced SQL: joins, window functions, CTEs
Schema design and normalization
Indexing and query optimization
JPA / Hibernate best practices
Migrations with Flyway
Project: Data Layer Upgrade
Reviews
What learners say
“The labs are at the right level — no copy-paste, you actually think. Exactly what I was looking for.”
James K.
Fullstack dev, London
“I had a technical interview the week after. The concepts really stuck.”
Yuki T.
Tech lead, Lyon
“Pro-level training, no fluff. The checklists and project code are my go-to reference.”
Léo D.
Java developer, Brussels