Databricks Certified Data Engineer - Professional
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In a data warehousing scenario, you are tasked with migrating an existing dataset from a traditional data warehouse to Delta Lake. The migration must ensure minimal downtime, maintain data integrity, and leverage Delta Lake's optimizations for performance. Additionally, the solution must comply with organizational policies that prioritize cost-effectiveness and scalability. Given these requirements, which of the following steps is the MOST appropriate to ensure a smooth migration? (Choose one option)
Explanation:
The correct answer is B because it addresses all key requirements: minimizing downtime through phased migration, ensuring data integrity and compatibility with Delta Lake's format, and considering cost-effectiveness and scalability. Option A neglects data transformation needs, potentially leading to compatibility issues. Option C overlooks the importance of validation and testing, risking data integrity. Option D ignores the impact on system performance and network bandwidth, which could lead to operational disruptions.