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:	153 Q&A's	Shared By:	kayson

Question 36

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 36

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 37

An engineering manager uses a Databricks SQL query to monitor ingestion latency for each data source. The manager checks the results of the query every day, but they are manually rerunning the query each day and waiting for the results.

Which of the following approaches can the manager use to ensure the results of the query are updated each day?

Options:

They can schedule the query to refresh every 1 day from the SQL endpoint's page in Databricks SQL.

They can schedule the query to refresh every 12 hours from the SQL endpoint's page in Databricks SQL.

They can schedule the query to refresh every 1 day from the query's page in Databricks SQL.

They can schedule the query to run every 1 day from the Jobs UI.

They can schedule the query to run every 12 hours from the Jobs UI.

Discussion

Question 38

A data engineer has configured a Structured Streaming job to read from a table, manipulate the data, and then perform a streaming write into a new table.

Questions 38

The code block used by the data engineer is below:

Which line of code should the data engineer use to fill in the blank if the data engineer only wants the query to execute a micro-batch to process data every 5 seconds?

Options:

trigger("5 seconds")

trigger(continuous="5 seconds")

trigger(once="5 seconds")

trigger(processingTime="5 seconds")

Discussion

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Question 39

A data engineer is processing ingested streaming tables and needs to filter out NULL values in the order_datetime column from the raw streaming table orders_raw and store the results in a new table orders_valid using DLT.

Which code snippet should the data engineer use?

Questions 39