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A data engineer is tasked with loading JSON data representing customer interactions into Snowflake. The JSON files contain varying schemas and nested arrays. To optimize query performance and minimize storage costs, which approach is MOST appropriate for handling the semi-structured data during loading, considering efficient data access patterns?
Correct Answer: D
Snowflake's schema detection during loading automatically creates a relational table based on the JSON data's structure, assigning appropriate data types. This avoids the overhead of manual schema definition and data transformation. While VARIANT can be used initially, schema detection provides a structured approach for querying semi-structured data. Choosing a relational schema upfront and discarding extra fields (B) leads to data loss. Using a view on a VARIANT column adds query overhead. Pre-processing outside Snowflake adds complexity.