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Review Summary
You've made a great start by correctly creating indexes for the Customers and Products tables. The syntax and naming are spot on!
However, changes are needed because the analysis of the usage scenarios is incomplete. The task mentions that the shop receives at least 100 new orders daily, which implies frequent queries on the Orders and OrderItems tables. Your current solution doesn't account for this, and is missing key indexes that would optimize fetching a customer's order history or the items within a specific order.
Please revisit the scenarios and add the necessary indexes for the foreign key columns in the Orders and OrderItems tables to complete the task.
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Footnotes
| CREATE INDEX Email ON Customers (Email); | ||
| CREATE INDEX Name ON Products (Name); |
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You've correctly created indexes for searching products by name and customers by email. However, the task requires analyzing all usage scenarios. Consider the scenario: 'Each day, the online shop receives at least 100 new orders.' This implies frequent queries on the Orders and OrderItems tables. Think about which columns would be used in WHERE clauses to fetch a customer's orders or the items belonging to a specific order.
mateacademy-ai-mentor
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Review Summary
Excellent work on this revision! I am approving your solution. You've successfully addressed the feedback from the previous review by creating all the necessary indexes for the Orders and OrderItems tables. Your analysis of the usage scenarios is now complete, and these changes will significantly improve query performance. The solution meets all requirements. Great job!
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