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Databricks Databricks-Certified-Professional-Data-Engineer Dumps Questions Answers

Databricks-Certified-Professional-Data-Engineer exam

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Databricks Certified Data Engineer Professional Exam

Last Update Feb 4, 2023
Total Questions : 222

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Last Update Feb 4, 2023
Total Questions : 222

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Databricks Certified Data Engineer Professional Exam Questions and Answers

Questions 1

You are working on IOT data where each device has 5 reading in an array collected in Celsius, you were asked to covert each individual reading from Celsius to Fahrenheit, fill in the blank with an appropriate function that can be used in this scenario.

Schema: deviceId INT, deviceTemp ARRAY

SELECT deviceId, __(deviceTempC,i-> (i * 9/5) + 32) as deviceTempF

FROM sensors

Options:

A.

APPLY

B.

MULTIPLY

C.

ARRAYEXPR

D.

TRANSFORM

E.

FORALL

Questions 2

When you drop an external DELTA table using the SQL Command DROP TABLE table_name, how does it impact metadata(delta log, history), and data stored in the storage?

Options:

A.

Drops table from metastore, metadata(delta log, history)and data in storage

B.

Drops table from metastore, data but keeps metadata(delta log, history) in storage

C.

Drops table from metastore, metadata(delta log, history)but keeps the data in storage

D.

Drops table from metastore, but keeps metadata(delta log, history)and data in storage

E.

Drops table from metastore and data in storage but keeps metadata(delta log, history)

Questions 3

Data engineering team has provided 10 queries and asked Data Analyst team to build a dashboard and refresh the data every day at 8 AM, identify the best approach to set up data refresh for this dashaboard?

Options:

A.

Each query requires a separate task and setup 10 tasks under a single job to run at 8 AM to refresh the dashboard

B.

The entire dashboard with 10 queries can be refreshed at once, single schedule needs to be set up to refresh at 8 AM.

C.

Setup JOB with linear dependency to all load all 10 queries into a table so the dashboard can be refreshed at once.

D.

A dashboard can only refresh one query at a time, 10 schedules to set up the refresh.

E.

Use Incremental refresh to run at 8 AM every day.

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