Solution

[VladislaveUst]

No description provided.

[mateacademy-ai-mentor]

Review Summary

Great job starting the database normalization process! You've correctly identified the need for new tables like Products and Warehouses. However, the current SQL script has a few critical issues that prevent it from running successfully.

To get it working, please address the following:

1. Missing Semicolon: The script fails immediately because of a missing semicolon at the end of the DROP DATABASE statement on line 2.
2. Missing Warehouses Table: Your ProductInventory table and an INSERT statement both reference a Warehouses table, but the CREATE TABLE statement for it is missing from the script.
3. Duplicate Table Definition: The ProductInventory table is defined twice (starting on line 12 and line 26). Please remove the first, unnormalized definition.
4. Incorrect Column Name: The final INSERT statement (line 43) uses the column name Amount, but your new ProductInventory table definition uses WarehouseAmount. These need to match.

Once these items are fixed, your normalized database schema should work as intended. Keep up the great work!

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[mateacademy-ai-mentor]

It's a good practice to end every SQL statement with a semicolon. This line is missing one.

[mateacademy-ai-mentor]

This ProductInventory table definition is a good step towards normalization! However, it has a dependency on a Warehouses table (see the foreign key on line 36), which is never created in this script. As part of normalizing the database to the third normal form, you need to extract warehouse information (WarehouseName, WarehouseAddress) into its own Warehouses table and create it here.

[mateacademy-ai-mentor]

This INSERT statement will fail because the Warehouses table it's trying to add data to has not been created. You'll need to add a CREATE TABLE Warehouses statement before this line for the script to work.

[mateacademy-ai-mentor]

There's a small mismatch here that will cause an error. The INSERT statement refers to a column named Amount, but in your new ProductInventory table definition on line 33, the column is named WarehouseAmount. These names need to match for the query to succeed.

[mateacademy-ai-mentor]

Review Summary

Excellent work on this submission! You've successfully addressed all the feedback from the previous review, and your task.sql script now fully meets all requirements. The database schema is correctly normalized to the Third Normal Form, with all tables and constraints created properly. The test data is also inserted correctly into the new structure. Your script is clean, logical, and ready to go. Great job!

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