tables updated to third normalization form

[TymurProkhorov]

No description provided.

[mateacademy-ai-mentor]

Review Summary

REQUEST_CHANGES

Your SQL script is very well-structured and shows a strong understanding of database normalization and MySQL syntax. However, there is one critical requirement missing that must be addressed before approval:

• Missing DROP DATABASE IF EXISTS ShopDB; Statement
  • The task requires that you start your script by dropping the ShopDB database if it already exists. This ensures a clean setup every time the script is run. Currently, your script begins with CREATE DATABASE ShopDB; but does not include the required DROP DATABASE IF EXISTS ShopDB; statement. This omission could cause errors if the database already exists, and it violates an explicit checklist item.
  • How to fix: Add the following line as the very first statement in your script:

    DROP DATABASE IF EXISTS ShopDB;

Minor suggestion:

• In your Countries table, you have both ID INT PRIMARY KEY AUTO_INCREMENT, and an explicit PRIMARY KEY (ID). Only one is needed, but this is not a blocker—just a style improvement for clarity.

Once you add the DROP DATABASE IF EXISTS ShopDB; line, your submission will fully meet the requirements. Great work on the normalization and overall structure! Let me know if you have any questions.

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[mateacademy-ai-mentor]

Review Summary

All core requirements are fully met, and the script is functionally correct. The schema is normalized to 3NF, all necessary tables and relationships are present, and the SQL syntax is valid for MySQL. The minor style suggestion about the primary key definition in the Countries table does not affect functionality or cause errors. Great job on implementing the feedback and producing a robust, well-organized solution!

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[mateacademy-ai-mentor]

There is a trailing comma after the last column definition in the Countries table. In MySQL, this will cause a syntax error. Remove the comma after Name VARCHAR(50) to ensure the table is created successfully.