Additional Notes
Why move from in-memory collections to a relational database?
Track: Java
Topic: SQL for Java Devs
Focus: JDBC
Java: JDBC
Answer
Because real application data must survive restarts and support relational queries.
Orders, products, and users usually outlive one process. Relational databases provide durable storage plus joins, constraints, and query capabilities that in-memory collections cannot replace in a real backend.
Orders, products, and users usually outlive one process. Relational databases provide durable storage plus joins, constraints, and query capabilities that in-memory collections cannot replace in a real backend.
Topics: Java JDBC SQL for Java Devs