Expert Answers to Databricks Exam Databricks-Certified-Professional-Data-Engineer Questions

Page: 1 / 10

Databricks Certification Databricks Certified Data Engineer Professional Exam

Databricks Certified Data Engineer Professional Exam

Last Update Oct 21, 2025
Total Questions : 195

To help you prepare for the Databricks-Certified-Professional-Data-Engineer Databricks exam, we are offering free Databricks-Certified-Professional-Data-Engineer Databricks exam questions. All you need to do is sign up, provide your details, and prepare with the free Databricks-Certified-Professional-Data-Engineer practice questions. Once you have done that, you will have access to the entire pool of Databricks Certified Data Engineer Professional Exam Databricks-Certified-Professional-Data-Engineer test questions which will help you better prepare for the exam. Additionally, you can also find a range of Databricks Certified Data Engineer Professional Exam resources online to help you better understand the topics covered on the exam, such as Databricks Certified Data Engineer Professional Exam Databricks-Certified-Professional-Data-Engineer video tutorials, blogs, study guides, and more. Additionally, you can also practice with realistic Databricks Databricks-Certified-Professional-Data-Engineer exam simulations and get feedback on your progress. Finally, you can also share your progress with friends and family and get encouragement and support from them.

Questions 2

The downstream consumers of a Delta Lake table have been complaining about data quality issues impacting performance in their applications. Specifically, they have complained that invalid latitude and longitude values in the activity_details table have been breaking their ability to use other geolocation processes.

A junior engineer has written the following code to add CHECK constraints to the Delta Lake table:

Questions 2

A senior engineer has confirmed the above logic is correct and the valid ranges for latitude and longitude are provided, but the code fails when executed.

Which statement explains the cause of this failure?

Options:

Because another team uses this table to support a frequently running application, two-phase locking is preventing the operation from committing.

The activity details table already exists; CHECK constraints can only be added during initial table creation.

The activity details table already contains records that violate the constraints; all existing data must pass CHECK constraints in order to add them to an existing table.

The activity details table already contains records; CHECK constraints can only be added prior to inserting values into a table.

The current table schema does not contain the field valid coordinates; schema evolution will need to be enabled before altering the table to add a constraint.

Discussion 0

Questions 3

The data science team has created and logged a production using MLFlow. The model accepts a list of column names and returns a new column of type DOUBLE.

The following code correctly imports the production model, load the customer table containing the customer_id key column into a Dataframe, and defines the feature columns needed for the model.

Questions 3

Which code block will output DataFrame with the schema'' customer_id LONG, predictions DOUBLE''?

Options:

Model, predict (df, columns)

Df, map (lambda k:midel (x [columns]) ,select (''customer_id predictions'')

Df. Select (''customer_id''.

Model (''columns) alias (''predictions'')

Df.apply(model, columns). Select (''customer_id, prediction''

Discussion 0

Yusra

I passed my exam. Cramkey Dumps provides detailed explanations for each question and answer, so you can understand the concepts better.

Alisha Sep 13, 2025

I recently used their dumps for the certification exam I took and I have to say, I was really impressed.

Faye

Yayyyy. I passed my exam. I think all students give these dumps a try.

Emmeline Sep 15, 2025

Definitely! I have no doubt new students will find them to be just as helpful as I did.

Pippa

I was so happy to see that almost all the questions on the exam were exactly what I found in their Dumps.

Anastasia Sep 17, 2025

You are right…It was amazing! The Cramkey Dumps were so comprehensive and well-organized, it made studying for the exam a breeze.

Reeva

Wow what a success I achieved today. Thank you so much Cramkey for amazing Dumps. All students must try it.

Amari Sep 14, 2025

Wow, that's impressive. I'll definitely keep Cramkey in mind for my next exam.

Rosalie

I passed. I would like to tell all students that they should definitely give Cramkey Dumps a try.

Maja Sep 22, 2025

That sounds great. I'll definitely check them out. Thanks for the suggestion!

Questions 4

A user wants to use DLT expectations to validate that a derived table report contains all records from the source, included in the table validation_copy.

The user attempts and fails to accomplish this by adding an expectation to the report table definition.

Which approach would allow using DLT expectations to validate all expected records are present in this table?

Options:

Define a SQL UDF that performs a left outer join on two tables, and check if this returns null values for report key values in a DLT expectation for the report table.

Define a function that performs a left outer join on validation_copy and report and report, and check against the result in a DLT expectation for the report table

Define a temporary table that perform a left outer join on validation_copy and report, and define an expectation that no report key values are null

Define a view that performs a left outer join on validation_copy and report, and reference this view in DLT expectations for the report table

Discussion 0

Questions 5

A data team's Structured Streaming job is configured to calculate running aggregates for item sales to update a downstream marketing dashboard. The marketing team has introduced a new field to track the number of times this promotion code is used for each item. A junior data engineer suggests updating the existing query as follows: Note that proposed changes are in bold.

Questions 5