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In the context of implementing Slowly Changing Dimension (SCD) Type 2 tables in Delta Lake within a Microsoft Azure environment, consider the following scenario: A retail company wants to track historical changes in product prices over time to analyze pricing trends and make informed decisions. The solution must ensure data integrity, support high query performance for reporting purposes, and minimize storage costs. Which of the following best describes the correct approach to implement an SCD Type 2 table to meet these requirements? Choose one option.
Explanation:
Option C is correct because it accurately describes the SCD Type 2 approach, which involves inserting a new record for each change with the valid-from date set to the current date and the valid-to date of the previous record updated to the current date. This method ensures historical data is preserved for analysis, supports high query performance by allowing efficient time-based queries, and manages storage costs by only inserting new records for changes. Options A, B, and D do not correctly implement SCD Type 2 or misunderstand its application in this scenario.