Databricks Certified Data Engineer - Associate
Get started today
Ultimate access to all questions.
Discuss the importance of using the COPY INTO command in scenarios where data is being loaded from various external sources into a Delta Lake table. How does this command help in maintaining data consistency and preventing duplication?
Discuss the importance of using the COPY INTO command in scenarios where data is being loaded from various external sources into a Delta Lake table. How does this command help in maintaining data consistency and preventing duplication?
Simulated
Explanation:
The COPY INTO command is important in maintaining data consistency and preventing duplication as it supports conditional loading, meaning it can be configured to skip records that already exist in the target table. This ensures that only new data is added, maintaining data integrity and preventing redundant data.