Answer-first summary for fast verification
Answer: Use the DESCRIBE HISTORY command to view the table history and identify if any versions are available for rollback.
The DESCRIBE HISTORY command provides a detailed history of transactions on the Delta Lake table, including all versions that are available for rollback. This capability is significant in data management and recovery scenarios as it allows for the restoration of previous states of the table, which is crucial for data integrity, auditing, and recovery from data corruption or erroneous updates.
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Describe the process of identifying that a Delta Lake table can be rolled back to a previous version. Explain the significance of this capability in data management and recovery scenarios.
A
Use the DESCRIBE HISTORY command to view the table history and identify if any versions are available for rollback.
B
Use the SHOW CREATE TABLE command to check if the table schema allows for version rollback.
C
Use the SELECT * FROM table_name command to inspect the data and determine if rollback is possible.
D
Use the VACUUM command to clean up the table and check for rollback capabilities.
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