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A data analyst is tasked with optimizing query performance for a frequently accessed report that calculates daily sales totals for different product categories. The report currently takes an unacceptable amount of time to generate. The underlying table 'SALES DATA contains columns: 'ORDER DATE (DATE), 'PRODUCT CATEGORY (VARCHAR), (NUMBER). Which of the following database objects would be MOST effective to significantly improve the report's performance without requiring changes to the existing SQL query used for the report?
Correct Answer: B
A materialized view stores the results of the query, so subsequent queries can retrieve the pre-computed results directly. This avoids the need to re-run the query each time the report is generated, significantly improving performance. A standard view is just a stored query and doesn't store data. An external table is used for data residing outside of Snowflake. A temporary table would only be useful during the session it's created in and would need to be populated, adding to processing time. A sequence object is used for generating unique numbers, not for calculating sales amounts.