feat: create ShopDB database with Products, Customers, Orders, OrderI…

[DRDR92]

…tems tables

[mateacademy-ai-mentor]

Review Summary

Your solution is approved because it cleanly implements all of the required database structures and relationships for the online shop schema. You correctly create the ShopDB database and define the Products, Customers, Orders, and OrderItems tables with the exact columns and allowed data types specified, using INT AUTO_INCREMENT primary keys on each ID. The foreign key constraints between Orders.CustomerID → Customers.ID, OrderItems.OrderID → Orders.ID, and OrderItems.ProductID → Products.ID are all present and use the required ON DELETE SET NULL behavior, which matches the task requirements. From a functionality and requirements standpoint, there are no critical blockers; the script should run successfully on a MySQL server and satisfy the tests tied to the schema definition. As a minor refinement, you might remove any stray trailing characters (such as extra backticks or non-SQL artifacts) at the end of the file to keep the script purely SQL and avoid potential parsing issues in some environments. Overall, this is a solid, specification-compliant implementation—well done.

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