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Exam Certified Data Engineer Professional All Questions

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Exam Certified Data Engineer Professional topic 1 question 135 discussion

Actual exam question from Databricks's Certified Data Engineer Professional
Question #: 135
Topic #: 1
[All Certified Data Engineer Professional Questions]

A view is registered with the following code:



Both users and orders are Delta Lake tables.

Which statement describes the results of querying recent_orders?

  • A. All logic will execute when the view is defined and store the result of joining tables to the DBFS; this stored data will be returned when the view is queried.
  • B. Results will be computed and cached when the view is defined; these cached results will incrementally update as new records are inserted into source tables.
  • C. All logic will execute at query time and return the result of joining the valid versions of the source tables at the time the query finishes.
  • D. All logic will execute at query time and return the result of joining the valid versions of the source tables at the time the query began.
Show Suggested Answer Hide Answer
Suggested Answer: D 🗳️

Comments

Chosen Answer:
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benni_ale
2 weeks, 5 days ago
Selected Answer: D
its D u scums
upvoted 2 times
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Isio05
5 months, 2 weeks ago
Selected Answer: D
Also voting for D, such view results are recalculated each time when called
upvoted 1 times
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Freyr
5 months, 3 weeks ago
Selected Answer: D
Correct Answer: D Correct because this option correctly describes the behavior of SQL views in Databricks. The view's query is executed against the current state of the data in the source tables at the moment the query begins. This means that any changes to the data that are committed while the query is running will not be reflected in the results of the query currently executing.
upvoted 3 times
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MDWPartners
5 months, 4 weeks ago
Selected Answer: B
It should be B
upvoted 1 times
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A (35%)
C (25%)
B (20%)
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