Related Databricks-Certified-Professional-Data-Engineer Certifications, Databricks-Certified-Professional-Data-Engineer Latest Study Questions

Blog Article

Tags: Related Databricks-Certified-Professional-Data-Engineer Certifications, Databricks-Certified-Professional-Data-Engineer Latest Study Questions, Databricks-Certified-Professional-Data-Engineer Exam Cram, Valid Databricks-Certified-Professional-Data-Engineer Test Duration, Databricks-Certified-Professional-Data-Engineer Test Assessment

The goal of a Databricks Databricks-Certified-Professional-Data-Engineer mock exam is to test exam readiness. PassExamDumps's online Databricks Certified Professional Data Engineer Exam Databricks-Certified-Professional-Data-Engineer practice test can be accessed online through all major browsers such as Chrome, Firefox, Safari, and Edge. You can also download and install the offline version of Databricks Certified Professional Data Engineer Exam Databricks-Certified-Professional-Data-Engineer Practice Exam software on Windows-based PCs only. You can prepare for the Databricks Certified Professional Data Engineer Exam exam without an internet connection using the offline version of the mock exam.

Leave yourself some spare time to study and think. Perhaps you will regain courage and confidence through a period of learning our Databricks-Certified-Professional-Data-Engineer preparation quiz. If you want to have a try, we have free demos of our Databricks-Certified-Professional-Data-Engineer exam questions to help you know about our products. And there are three versions of the free demos according to the three different versions of the Databricks-Certified-Professional-Data-Engineer study braindumps: the PDF, the Software and the APP online. Just try and you will love them.

Related Databricks-Certified-Professional-Data-Engineer Certifications Exam Pass at Your First Attempt | Databricks Databricks-Certified-Professional-Data-Engineer Latest Study Questions

Do you want to spend half of time and efforts to pass Databricks-Certified-Professional-Data-Engineer certification exam? Then you can choose PassExamDumps. With efforts for years, the passing rate of Databricks-Certified-Professional-Data-Engineer exam training, which is implemented by the PassExamDumps website worldwide, is the highest of all. With PassExamDumps website you can download Databricks-Certified-Professional-Data-Engineer free demo and answers to know how high is the accuracy rate of Databricks-Certified-Professional-Data-Engineer test certification training materials, and to determine your selection.

Databricks Certified Professional Data Engineer certification is a valuable credential for professionals who want to advance their careers in data engineering. Databricks Certified Professional Data Engineer Exam certification demonstrates the candidates' proficiency in using Databricks to build efficient and scalable data processing systems. Databricks Certified Professional Data Engineer Exam certification also validates the candidates' ability to work with big data technologies and handle complex data workflows. Overall, the Databricks Certified Professional Data Engineer certification is an excellent way for professionals to showcase their expertise in data engineering and increase their value in the job market.

Databricks Certified Professional Data Engineer Exam Sample Questions (Q115-Q120):

NEW QUESTION # 115
A Delta Lake table was created with the below query:
Consider the following query:
DROP TABLE prod.sales_by_store -
If this statement is executed by a workspace admin, which result will occur?

A. The table will be removed from the catalog and the data will be deleted.
B. The table will be removed from the catalog but the data will remain in storage.
C. An error will occur because Delta Lake prevents the deletion of production data.
D. Nothing will occur until a COMMIT command is executed.
E. Data will be marked as deleted but still recoverable with Time Travel.

Answer: A

Explanation:
When a table is dropped in Delta Lake, the table is removed from the catalog and the data is deleted. This is because Delta Lake is a transactional storage layer that provides ACID guarantees. When a table is dropped, the transaction log is updated to reflect the deletion of the table and the data is deleted from the underlying storage. References:
* https://docs.databricks.com/delta/quick-start.html#drop-a-table
* https://docs.databricks.com/delta/delta-batch.html#drop-table

NEW QUESTION # 116
Delete records from the transactions Delta table where transactionDate is greater than current timestamp?

A. DELET FROM transactions where transactionDate GE current_timestamp()
B. DELETE FROM transactions where transactionDate > current_timestamp() KEEP_HISTORY
C. DELETE FROM transactions where transactionDate > current_timestamp()
D. DELETE FROM transactions if transctionDate > current_timestamp()
E. DELETE FROM transactions FORMAT DELTA where transactionDate > cur-renct_timestmap()

Answer: C

NEW QUESTION # 117
An engineering manager uses a Databricks SQL query to monitor their team's progress on fixes related to
customer-reported bugs. 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 up-dated each
day?

A. They can schedule the query to refresh every 1 day from the SQL endpoint's page in Databricks SQL
B. They can schedule the query to run every 12 hours from the Jobs UI
C. They can schedule the query to refresh every 12 hours from the SQL endpoint's page in Databricks SQL
D. They can schedule the query to run every 1 day from the Jobs UI
E. They can schedule the query to refresh every 1 day from the query's page in Databricks SQL

Answer: E

NEW QUESTION # 118
Which method is used to solve for coefficients bO, b1, ... bn in your linear regression model:

A. Integer programming
B. Ordinary Least squares
C. Ridge and Lasso
D. Apriori Algorithm

Answer: B

Explanation:
Explanation : RY = b0 + b1x1+b2x2+ .... +bnxn
In the linear model, the bi's represent the unknown p parameters. The estimates for these unknown parameters
are chosen so that, on average, the model provides a reasonable estimate of a person's income based on age
and education. In other words, the fitted model should minimize the overall error between the linear model and
the actual observations. Ordinary Least Squares (OLS) is a common technique to estimate the parameters

NEW QUESTION # 119
A junior data engineer is working to implement logic for a Lakehouse table named silver_device_recordings. The source data contains 100 unique fields in a highly nested JSON structure.
The silver_device_recordings table will be used downstream to power several production monitoring dashboards and a production model. At present, 45 of the 100 fields are being used in at least one of these applications.
The data engineer is trying to determine the best approach for dealing with schema declaration given the highly-nested structure of the data and the numerous fields.
Which of the following accurately presents information about Delta Lake and Databricks that may impact their decision-making process?

A. Schema inference and evolution on .Databricks ensure that inferred types will always accurately match the data types used by downstream systems.
B. Human labor in writing code is the largest cost associated with data engineering workloads; as such, automating table declaration logic should be a priority in all migration workloads.
C. The Tungsten encoding used by Databricks is optimized for storing string data; newly-added native support for querying JSON strings means that string types are always most efficient.
D. Because Delta Lake uses Parquet for data storage, data types can be easily evolved by just modifying file footer information in place.
E. Because Databricks will infer schema using types that allow all observed data to be processed, setting types manually provides greater assurance of data quality enforcement.

Answer: E

Explanation:
This is the correct answer because it accurately presents information about Delta Lake and Databricks that may impact the decision-making process of a junior data engineer who is trying to determine the best approach for dealing with schema declaration given the highly-nested structure of the data and the numerous fields. Delta Lake and Databricks support schema inference and evolution, which means that they can automatically infer the schema of a table from the source data and allow adding new columns or changing column types without affecting existing queries or pipelines. However, schema inference and evolution may not always be desirable or reliable, especially when dealing with complex or nested data structures or when enforcing data quality and consistency across different systems. Therefore, setting types manually can provide greater assurance of data quality enforcement and avoid potential errors or conflicts due to incompatible or unexpected data types. Verified Reference: [Databricks Certified Data Engineer Professional], under "Delta Lake" section; Databricks Documentation, under "Schema inference and partition of streaming DataFrames/Datasets" section.

NEW QUESTION # 120
......

Are you often regretful that you have purchased an inappropriate product? Unlike other platforms for selling test materials, in order to make you more aware of your needs, Databricks-Certified-Professional-Data-Engineer test preps provide sample questions for you to download for free. You can use the sample questions to learn some of the topics about Databricks-Certified-Professional-Data-Engineer learn torrent and familiarize yourself with the Databricks-Certified-Professional-Data-Engineer quiz torrent in advance. If you feel that the Databricks-Certified-Professional-Data-Engineer quiz torrent is satisfying to you, you can choose to purchase our complete question bank. After the payment, you will receive the email sent by the system within 5-10 minutes.

Databricks-Certified-Professional-Data-Engineer Latest Study Questions: https://www.passexamdumps.com/Databricks-Certified-Professional-Data-Engineer-valid-exam-dumps.html

Report this page

RELATED DATABRICKS-CERTIFIED-PROFESSIONAL-DATA-ENGINEER CERTIFICATIONS, DATABRICKS-CERTIFIED-PROFESSIONAL-DATA-ENGINEER LATEST STUDY QUESTIONS

Related Databricks-Certified-Professional-Data-Engineer Certifications, Databricks-Certified-Professional-Data-Engineer Latest Study Questions