Normalize the database ShopDB

[AndS9]

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[mateacademy-ai-mentor]

Review Summary

Great job identifying the need to normalize the warehouse data! That's a solid first step. However, this requires changes because the schema isn't fully in the third normal form (3NF) yet, which is causing the automated tests to fail.

The main issue is that ProductName is still in the ProductInventory table, creating data redundancy. To fix this and meet the 3NF requirement, you'll need to:

1. Create a separate Products table for product information.
2. Replace ProductName in ProductInventory with a foreign key that references the new Products table.

Also, please remember to add the DROP DATABASE IF EXISTS ShopDB; statement at the beginning of your script, as this was a specific requirement.

Once these changes are made, your solution should pass the tests. You're on the right track!

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[mateacademy-ai-mentor]

While this table might seem to be in 3NF with ID as the primary key, it doesn't fully meet the goals of normalization. The ProductName column creates data redundancy (e.g., 'AwesomeProduct' is repeated), which can lead to update, insertion, and deletion anomalies. A better 3NF design would involve creating a separate Products table for product information and using a ProductID foreign key in this table instead of ProductName.

[mateacademy-ai-mentor]

Review Summary

Excellent work on normalizing the database schema to the third normal form! The new table structure and updated INSERT statements are perfect. However, one critical requirement is missing. The script fails if it's run more than once because it tries to create a database that already exists. To fix this, please add the following command at the very top of your task.sql file:

DROP DATABASE IF EXISTS ShopDB;

This will ensure your script can be run multiple times without errors. After this small change, your solution will be ready for approval!

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Fix the issues, commit the changes, and then re-request my review using the Re-request review button² in the Reviewers tab.

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[mateacademy-ai-mentor]

Review Summary

Excellent work on this task! I am approving your solution as you have successfully met all the requirements. You've done a great job normalizing the database schema to the third normal form and correctly updating the INSERT statements to work with the new structure. Adding the DROP DATABASE command at the top ensures the script is robust and re-runnable. This is a complete and well-executed solution. Keep up the fantastic work!

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