Normalization database

[Loki-sudo007]

No description provided.

[mateacademy-ai-mentor]

Review Summary

I am approving your solution because the schema is correctly normalized to 3NF and all core requirements are met. You cleanly separated products and warehouses into their own tables and kept ProductInventory as a junction table with only foreign keys and quantity, which removes the previous redundancy and matches proper relational design. The Countries table is preserved and warehouses reference it by CountryID, maintaining referential integrity while avoiding duplicated country data.

Your INSERT statements correctly recreate the original logical test data: one product, two warehouses (each tied to a country), and matching inventory quantities in the junction table. There are no critical issues that would block functionality or violate the task requirements. As minor improvements (not required for this task), you could consider adding DROP DATABASE IF EXISTS ShopDB; at the top to make the script fully rerunnable, fixing the small typo in the product name, and adding explicit NOT NULL constraints on key columns. Overall, this is a solid, well-structured normalization and your work for this task is accepted.

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