over 1 year her

The world is changing, so we should keep up with the changing world's step as much as possible. Our PassCollection has been focusing on the changes of Databricks-Certified-Professional-Data-Engineer exam and studying in the exam, and now what we offer you is the most precious Databricks-Certified-Professional-Data-Engineer test materials. After you purchase our dump, we will inform you the Databricks-Certified-Professional-Data-Engineer update messages at the first time; this service is free, because when you purchase our study materials, you have bought all your Databricks-Certified-Professional-Data-Engineer exam related assistance. You can hardly grow by relying on your own closed doors. Our Databricks-Certified-Professional-Data-Engineer preparation materials are very willing to accompany you through this difficult journey. You know, choosing a good product can save you a lot of time. And choose our Databricks-Certified-Professional-Data-Engineer exam questions will save more for our Databricks-Certified-Professional-Data-Engineer learning guide is carefully compiled by the professional experts who have been in this career for over ten years. So our Databricks-Certified-Professional-Data-Engineer practice braindumps contain all the information you need. >> Free Databricks-Certified-Professional-Data-Engineer Practice <<

Free Databricks-Certified-Professional-Data-Engineer Download | Official Databricks-Certified-Professional-Data-Engineer Practice Test

Our Databricks-Certified-Professional-Data-Engineer quiz torrent boost 3 versions and they include PDF version, PC version, App online version. Different version boosts different functions and using method. For example, the PDF version is convenient for the download and printing our Databricks-Certified-Professional-Data-Engineer exam torrent and is easy and suitable for browsing learning. And the PC version of Databricks-Certified-Professional-Data-Engineer Quiz torrent can stimulate the real exam’s scenarios, is stalled on the Windows operating system. You can use it any time to test your own Exam stimulation tests scores and whether you have mastered our Databricks-Certified-Professional-Data-Engineer exam torrent.

Databricks Certified Professional Data Engineer Exam Sample Questions (Q87-Q92):

NEW QUESTION # 87
Which of the following SQL command can be used to insert or update or delete rows based on a condition to check if a row(s) exists?

• A. COPY INTO table_name
• B. UPDATE table_name
• C. INSERT IF EXISTS table_name
• D. MERGE INTO table_name
• E. INSERT INTO OVERWRITE table_name

Answer: D Explanation:
Explanation
here is the additional documentation for your review.
https://docs.databricks.com/spark/latest/spark-sql/language-manual/delta-merge-into.html
1.MERGE INTO targettablename [targetalias]
2. USING sourcetablereference [sourcealias]
3. ON mergecondition
4. [ WHEN MATCHED [ AND condition ] THEN matchedaction ] [...]
5. [ WHEN NOT MATCHED [ AND condition ] THEN notmatchedaction ] [...]
6.
7.matchedaction
8. { DELETE |
9. UPDATE SET * |
10. UPDATE SET { column1 = value1 } [, ...] }
11.
12.notmatchedaction
13. { INSERT * |
14. INSERT (column1 [, ...] ) VALUES (value1 [, ...])
NEW QUESTION # 88
A dataset has been defined using Delta Live Tables and includes an expectations clause: CON-STRAINT validtimestamp EXPECT (timestamp > '2020-01-01') ON VIOLATION FAIL What is the expected behavior when a batch of data containing data that violates these constraints is processed?

• A. Records that violate the expectation are added to the target dataset and recorded as invalid in the event log.
• B. Records that violate the expectation are dropped from the target dataset and recorded as invalid in the event log.
• C. Records that violate the expectation are dropped from the target dataset and loaded into a quarantine table.
• D. Records that violate the expectation are added to the target dataset and flagged as in-valid in a field added to the target dataset.
• E. Records that violate the expectation cause the job to fail

Answer: E Explanation:
Explanation
The answer is Records that violate the expectation cause the job to fail.
Delta live tables support three types of expectations to fix bad data in DLT pipelines Review below example code to examine these expectations, Diagram Description automatically generated with medium confidence

Invalid records:
Use the expect operator when you want to keep records that violate the expectation. Records that violate the expectation are added to the target dataset along with valid records:
SQL
CONSTRAINT validtimestamp EXPECT (timestamp > '2020-01-01')
Drop invalid records:
Use the expect or drop operator to prevent the processing of invalid records. Records that violate the expectation are dropped from the target dataset:
SQL
CONSTRAINT validtimestamp EXPECT (timestamp > '2020-01-01') ON VIOLATION DROP ROW Fail on invalid records:
When invalid records are unacceptable, use the expect or fail operator to halt execution immediately when a record fails validation. If the operation is a table update, the system atomically rolls back the transaction:
SQL
CONSTRAINT valid_timestamp EXPECT (timestamp > '2020-01-01') ON VIOLATION FAIL UP-DATE
NEW QUESTION # 89
Which of the following techniques structured streaming uses to create an end-to-end fault toler-ance?

• A. Stream will failover to available nodes in the cluste
• B. Checkpointing and idempotent sinks
• C. Write ahead logging and water marking
• D. Write ahead logging and idempotent sinks
• E. Checkpointing and Water marking

Answer: B Explanation:
Explanation
The answer is Checkpointing and idempotent sinks
How does structured streaming achieves end to end fault tolerance:
First, Structured Streaming uses checkpointing and write-ahead logs to record the offset range of data being processed during each trigger interval.
Next, the streaming sinks are designed to be idempotent-that is, multiple writes of the same data (as identified by the offset) do not result in duplicates being written to the sink.
Taken together, replayable data sources and idempotent sinks allow Structured Streaming to en-sure end-to-end, exactly-once semantics under any failure condition.
NEW QUESTION # 90
When investigating a data issue you realized that a process accidentally updated the table, you want to query the same table with yesterday's version of the data so you can review what the prior version looks like, what is the best way to query historical data so you can do your analysis?

• A. DISCRIBE HISTORY tablename AS OF datesub(current_date(), 1)
• B. TIMETRAVEL FROM tablename WHERE timestamp = datesub(current_date(), 1)
• C. SELECT * FROM tablename TIMESTAMP AS OF datesub(current_date(), 1)
• D. SELECT * FROM TIMETRAVEL(tablename) WHERE time_stamp = 'timestamp'
• E. SHOW HISTORY tablename AS OF datesub(current_date(), 1)

Answer: C Explanation:
Explanation
The answer is SELECT * FROM tablename TIMESTAMP as of datesub(currentdate(), 1) FYI, Time travel supports two ways one is using timestamp and the second way is using version number, Timestamp:
1.SELECT count(*) FROM mytable TIMESTAMP AS OF "2019-01-01"
2.SELECT count() FROM mytable TIMESTAMP AS OF datesub(current_date(), 1)
3.SELECT count() FROM mytable TIMESTAMP AS OF "2019-01-01 01:30:00.000" Version Number:
1.SELECT count(*) FROM mytable VERSION AS OF 5238
2.SELECT count() FROM [email protected]
3.SELECT count() FROM delta./path/to/my/[[email protected]](/cdn-cgi/l/email-protection)
https://databricks.com/blog/2019/02/04/introducing-delta-time-travel-for-large-scale-data-lakes.html
NEW QUESTION # 91
Which of the following techniques structured streaming uses to ensure recovery of failures during stream processing?

• A. The stream will failover to available nodes in the cluster
• B. Checkpointing and write-ahead logging
• C. Delta time travel
• D. Checkpointing and Watermarking
• E. Checkpointing and Idempotent sinks
• F. Write ahead logging and watermarking

Answer: B Explanation:
Explanation
The answer is Checkpointing and write-ahead logging.
Structured Streaming uses checkpointing and write-ahead logs to record the offset range of data being processed during each trigger interval.
NEW QUESTION # 92
...... Nowadays, seldom do the exam banks have such an integrated system to provide you a simulation test. You will gradually be aware of the great importance of stimulating the actual Databricks-Certified-Professional-Data-Engineer exam after learning about our Databricks-Certified-Professional-Data-Engineer study tool. Because of this function, you can easily grasp how the practice system operates and be able to get hold of the core knowledge about the Databricks-Certified-Professional-Data-Engineer Exam. In addition, when you are in the real exam environment, you can learn to control your speed and quality in answering questions and form a good habit of doing exercise, so that you’re going to be fine in the Databricks-Certified-Professional-Data-Engineer exam. Free Databricks-Certified-Professional-Data-Engineer Download: https://www.passcollection.com/Databricks-Certified-Professional-Data-Engineer_real-exams.html After you purchase Databricks-Certified-Professional-Data-Engineer study materials, we guarantee that your Databricks-Certified-Professional-Data-Engineer study material is tailor-made, Databricks Free Databricks-Certified-Professional-Data-Engineer Practice Fervent staff and considerate aftersales services, Our Databricks-Certified-Professional-Data-Engineer test engine will help you pass exams successfully, Databricks Free Databricks-Certified-Professional-Data-Engineer Practice Just high quality is far from excellent, Databricks Free Databricks-Certified-Professional-Data-Engineer Practice It is important for ambitious young men to arrange time properly. Before you begin, write down as much information as you can remember (https://www.passcollection.com/Databricks-Certified-Professional-Data-Engineer_real-exams.html) from the study sheets, flash cards, and exam engine on the paper provided to you, The client loses network connectivity.

Databricks Databricks-Certified-Professional-Data-Engineer Desktop Practice Test Software

After you purchase Databricks-Certified-Professional-Data-Engineer study materials, we guarantee that your Databricks-Certified-Professional-Data-Engineer study material is tailor-made, Fervent staff and considerate aftersales services. Our Databricks-Certified-Professional-Data-Engineer test engine will help you pass exams successfully, Just high quality is far from excellent, It is important for ambitious young men to arrange time properly.