Databricks certsexpert databricks Certification Databricks-certified-data-engineer-associate Databricks Study Notes by Kayson q41 vce pdf

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Exam Name:	Databricks Certified Data Engineer Associate Exam
Exam Code:	Databricks-Certified-Data-Engineer-Associate Dumps
Vendor:	Databricks	Certification:	Databricks Certification
Questions:	159 Q&A's	Shared By:	kayson

Question 36

Which method should a Data Engineer apply to ensure Workflows are being triggered on schedule?

Options:

Scheduled Workflows require an always-running cluster, which is more expensive but reduces processing latency.

Scheduled Workflows process data as it arrives at configured sources.

Scheduled Workflows can reduce resource consumption and expense since the cluster runs only long enough to execute the pipeline.

Scheduled Workflows run continuously until manually stopped.

Discussion

Question 37

The Delta transaction log for the ‘students’ tables is shown using the ‘DESCRIBE HISTORY students’ command. A Data Engineer needs to query the table as it existed before the UPDATE operation listed in the log.

Questions 37

Which command should the Data Engineer use to achieve this? (Choose two.)

Options:

SELECT * FROM students@v4

SELECT * FROM students TIMESTAMP AS OF ‘2024-04-22T 14:32:47.000+00:00’

SELECT * FROM students FROM HISTORY VERSION AS OF 3

SELECT * FROM students VERSION AS OF 5

SELECT * FROM students TIMESTAMP AS OF ‘2024-04-22T 14:32:58.000+00:00’

Discussion

Question 38

Which of the following commands will return the location of database customer360?

Options:

DESCRIBE LOCATION customer360;

DROP DATABASE customer360;

DESCRIBE DATABASE customer360;

ALTER DATABASE customer360 SET DBPROPERTIES ('location' = '/user'};

USE DATABASE customer360;

Discussion

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Question 39

A data engineer has realized that the data files associated with a Delta table are incredibly small. They want to compact the small files to form larger files to improve performance.

Which of the following keywords can be used to compact the small files?

Options:

REDUCE

OPTIMIZE

COMPACTION

REPARTITION

VACUUM