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Exam Certified Data Engineer Professional topic 1 question 32 discussion

Actual exam question from Databricks's Certified Data Engineer Professional
Question #: 32
Topic #: 1
[All Certified Data Engineer Professional Questions]

The data engineering team maintains the following code:

Assuming that this code produces logically correct results and the data in the source tables has been de-duplicated and validated, which statement describes what will occur when this code is executed?

  • A. A batch job will update the enriched_itemized_orders_by_account table, replacing only those rows that have different values than the current version of the table, using accountID as the primary key.
  • B. The enriched_itemized_orders_by_account table will be overwritten using the current valid version of data in each of the three tables referenced in the join logic.
  • C. An incremental job will leverage information in the state store to identify unjoined rows in the source tables and write these rows to the enriched_iteinized_orders_by_account table.
  • D. An incremental job will detect if new rows have been written to any of the source tables; if new rows are detected, all results will be recalculated and used to overwrite the enriched_itemized_orders_by_account table.
  • E. No computation will occur until enriched_itemized_orders_by_account is queried; upon query materialization, results will be calculated using the current valid version of data in each of the three tables referenced in the join logic.
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Suggested Answer: B 🗳️
by sturcu at Oct. 16, 2023, 11:57 a.m.

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arekm
1 month ago
Selected Answer: B
B - it is a batch overwrite, which means: whatever was there is gone.
upvoted 1 times
...
nedlo
3 months, 1 week ago
Selected Answer: B
i agree. Cannot be E because write itself is action
upvoted 1 times
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AndreFR
5 months, 2 weeks ago
Selected Answer: B
B because code has : .mode(“Overwrite”)
upvoted 1 times
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imatheushenrique
8 months, 1 week ago
B is correct
upvoted 1 times
...
AziLa
1 year ago
Correct Ans is B
upvoted 2 times
...
Jay_98_11
1 year ago
Selected Answer: B
correct
upvoted 2 times
...
sturcu
1 year, 3 months ago
Selected Answer: B
B is correct
upvoted 3 times
...
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