Databricks Certified Data Engineer - Professional
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A data engineering team manages a Delta Lake environment using default configurations. They have implemented a batch job that runs every Sunday at 1:00 AM to process data deletion requests; this job consistently finishes in less than one hour. Additionally, a maintenance job runs every Monday at 3:00 AM to execute the VACUUM command across all tables. A compliance officer expresses concern that the Delta Lake time travel feature might allow unauthorized access to deleted data.
Given the current schedule and default settings, which of the following statements correctly addresses the officer's concern?
A
Because the default data retention period is 7 days, files containing logically deleted records will persist until the VACUUM job runs 8 days after the initial deletion.
B
Delta Lake's ACID compliance guarantees that deleted records are physically removed from all underlying storage as soon as the delete transaction is committed.
C
Since the VACUUM command permanently purges files, deleted data is only accessible via time travel for exactly 24 hours following the completion of the Sunday job.
D
Due to the default data retention period of 24 hours, any files containing deleted records will remain until the VACUUM job is executed the next morning.