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Learn to query, join, and design relational databases correctly — the skill every backend role assumes you already have.
Haithem Mihoubi
Formateur
Cours gratuit
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Ce cours inclut :
Every backend framework (Spring Boot's JPA included) assumes you understand what's happening underneath the ORM. This course builds that foundation: querying with SELECT/WHERE/JOIN, designing normalized schemas with proper keys and constraints, and understanding indexes and transactions well enough to reason about performance and correctness, not just copy queries that happen to work.
Developers who can write code but have never really learned SQL — including anyone about to take Spring Boot 3 Engineering Masterclass, which assumes this knowledge for its Spring Data JPA module.
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SQL for Developers
Cours gratuit
Full course walkthrough: SQL for beginners
SELECT, WHERE & ORDER BY
Joins: combining tables correctly
Keys, constraints & normalization
Indexes & transactions
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