Added new task.sql #73
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Script for database and tables creation.
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Thank you for your hard work on this SQL script! 😊 While you've made a great start by setting up the database and tables, there are a few critical issues that need to be addressed to meet the task requirements:
-
Database Naming: The database is named
DBShopinstead ofShopDBas specified in the requirements. It's important to follow naming conventions to ensure consistency. -
Data Type for Price: The
Pricecolumn in theProductstable is currently set asVARCHAR(50). This is not suitable for storing numerical values. Please consider using a numeric data type likeDECIMALorFLOATfor accurate price representation. -
Foreign Key Constraints: The foreign key constraints are using
ON DELETE NO ACTION, whereas the requirements specifyON DELETE SET NULL. This behavior is crucial for maintaining data integrity according to the specified business logic.
These changes are essential to ensure the database functions correctly and aligns with the task requirements. Once these issues are resolved, your solution will be much stronger. Keep up the great work, and don't hesitate to reach out if you need further guidance! 🚀
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🔄 Fix the issues, commit the changes, and then re-request my review using the Re-request review button in the Reviewers tab.
task.sql
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| ID INT AUTO_INCREMENT, | ||
| Name VARCHAR(50), | ||
| Description VARCHAR(100), | ||
| Price VARCHAR(50), |
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The 'Price' column is defined as VARCHAR(50), which is not suitable for storing numerical values. Consider using a numeric data type such as DECIMAL or FLOAT for storing prices.
task.sql
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| CREATE TABLE Orders ( | ||
| ID INT AUTO_INCREMENT, | ||
| CustomerID INT, | ||
| FOREIGN KEY (CustomerID) REFERENCES Customers(ID) ON DELETE NO ACTION, |
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The foreign key constraint on 'CustomerID' uses 'ON DELETE NO ACTION'. Consider whether 'NO ACTION' is the desired behavior when a customer is deleted. You might want to use 'CASCADE' or 'SET NULL' depending on the business logic.
task.sql
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| CREATE TABLE OrderItems ( | ||
| ID INT AUTO_INCREMENT, | ||
| OrderID INT, | ||
| FOREIGN KEY (OrderID) REFERENCES Orders(ID) ON DELETE NO ACTION, |
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The foreign key constraint on 'OrderID' uses 'ON DELETE NO ACTION'. Consider whether 'NO ACTION' is the desired behavior when an order is deleted. You might want to use 'CASCADE' or 'SET NULL' depending on the business logic.
task.sql
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| OrderID INT, | ||
| FOREIGN KEY (OrderID) REFERENCES Orders(ID) ON DELETE NO ACTION, | ||
| ProductID INT, | ||
| FOREIGN KEY (ProductID) REFERENCES Products(ID) ON DELETE NO ACTION, |
There was a problem hiding this comment.
The foreign key constraint on 'ProductID' uses 'ON DELETE NO ACTION'. Consider whether 'NO ACTION' is the desired behavior when a product is deleted. You might want to use 'CASCADE' or 'SET NULL' depending on the business logic.
There was a problem hiding this comment.
Review Summary
Great job on updating the SQL script! 🎉 Your code in the task.sql file meets the task requirements and constraints as specified. Here's a brief overview:
- Database Naming: The database is correctly named
ShopDB. - Table Creation: All required tables (
Products,Customers,Orders,OrderItems) are created with the specified columns. - Data Types: The data types for each column are appropriately chosen, with
Priceset asFLOAT, which is suitable for numerical values. - Foreign Key Constraints: The foreign key constraints use
ON DELETE SET NULL, ensuring data integrity according to the specified business logic.
Your script is well-structured and fulfills all the specified requirements. There are no missing or incorrect elements based on the task description.
Although the decision is to APPROVE to help you move forward with your learning, please review any comments provided to improve your code further. If there are any critical issues, ensure they are addressed in future tasks to avoid similar problems. Keep up the good work and continue learning from your experiences! 🚀
✨ Please rate this review in the Platform's notification center. I will be grateful for your feedback! ✨
Script for database and tables creation.