Answer: INSERT INTO

## Explanation **INSERT INTO** is the correct SQL keyword for appending new rows to an existing Delta table. Here's why: - **INSERT INTO** - This command adds new rows to an existing table without affecting existing data. It's specifically designed for appending data. Why the other options are incorrect: - **UPDATE** - Modifies existing rows in a table, doesn't add new rows - **COPY** - Not a standard SQL keyword for table operations; typically used for file operations - **DELETE** - Removes rows from a table, doesn't add new data - **UNION** - Combines results from multiple SELECT statements, but doesn't directly append to tables In Databricks with Delta tables, `INSERT INTO` is the standard way to add new records while maintaining table integrity and supporting ACID transactions.

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