SQL for Java Devs · interview question
Why does an e-commerce app eventually need relational persistence instead of only in-memory collections?
Multiple choiceEasychapter-8-curatedpremiumsql-for-java-devsjdbc
Answer and explanation
Correct answer
A. Because orders and products must survive application restarts and support real relational queries
Why
In-memory storage disappears when the process stops. Real applications need durable data plus table relationships that can be queried across orders, users, products, and inventory.
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