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Exam Certified Data Engineer Professional topic 1 question 99 discussion

Actual exam question from Databricks's Certified Data Engineer Professional
Question #: 99
Topic #: 1
[All Certified Data Engineer Professional Questions]

The data governance team is reviewing code used for deleting records for compliance with GDPR. The following logic has been implemented to propagate delete requests from the user_lookup table to the user_aggregates table.



Assuming that user_id is a unique identifying key and that all users that have requested deletion have been removed from the user_lookup table, which statement describes whether successfully executing the above logic guarantees that the records to be deleted from the user_aggregates table are no longer accessible and why?

  • A. No; the Delta Lake DELETE command only provides ACID guarantees when combined with the MERGE INTO command.
  • B. No; files containing deleted records may still be accessible with time travel until a VACUUM command is used to remove invalidated data files.
  • C. Yes; the change data feed uses foreign keys to ensure delete consistency throughout the Lakehouse.
  • D. Yes; Delta Lake ACID guarantees provide assurance that the DELETE command succeeded fully and permanently purged these records.
  • E. No; the change data feed only tracks inserts and updates, not deleted records.
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️
by 60ties at Nov. 15, 2023, 2:24 p.m.

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_lene_
3 months ago
Selected Answer: B
vacuum prevents delta travel
upvoted 1 times
...
Hadiler
8 months, 3 weeks ago
Selected Answer: B
B records will be available in time travel until VACUUM will be executed
upvoted 2 times
...
alexvno
1 year, 4 months ago
Selected Answer: B
Delta travel
upvoted 2 times
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60ties
1 year, 5 months ago
Selected Answer: B
B is best. VACUUM command is needed to completely remove logs of the deleted files.
upvoted 2 times
...
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