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Exam Databricks-Certified-Data-Engineer-Associate Demo | Databricks-Certified-Data-Engineer-Associate Exam Tutorial

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Databricks Certified Data Engineer Associate Exam Sample Questions (Q105-Q110):

NEW QUESTION # 105
A data engineer needs to create a table in Databricks using data from a CSV file at location /path/to/csv.
They run the following command:

Which of the following lines of code fills in the above blank to successfully complete the task?

A. FROM CSV
B. USING DELTA
C. USING CSV
D. None of these lines of code are needed to successfully complete the task
E. FROM "path/to/csv"

Answer: C

NEW QUESTION # 106
Which of the following commands will return the location of database customer360?

A. DROP DATABASE customer360;
B. USE DATABASE customer360;
C. ALTER DATABASE customer360 SET DBPROPERTIES ('location' = '/user'};
D. DESCRIBE DATABASE customer360;
E. DESCRIBE LOCATION customer360;

Answer: D

Explanation:
The command DESCRIBE DATABASE customer360; will return the location of the database customer360, along with its comment and properties. This command is an alias for DESCRIBE SCHEMA customer360;, which can also be used to get the same information. The other commands will either drop the database, alter its properties, or use it as the current database, but will not return its location12. Reference:
DESCRIBE DATABASE | Databricks on AWS
DESCRIBE DATABASE - Azure Databricks - Databricks SQL

NEW QUESTION # 107
A dataset has been defined using Delta Live Tables and includes an expectations clause:
CONSTRAINT valid_timestamp EXPECT (timestamp > '2020-01-01') ON VIOLATION DROP ROW 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 flagged as invalid in a field added to the target dataset.
B. Records that violate the expectation are dropped from the target dataset and loaded into a quarantine table.
C. Records that violate the expectation cause the job to fail.
D. Records that violate the expectation are dropped from the target dataset and recorded as invalid in the event log.
E. Records that violate the expectation are added to the target dataset and recorded as invalid in the event log.

Answer: D

Explanation:
Delta Live Tables expectations are optional clauses that apply data quality checks on each record passing through a query. An expectation consists of a description, a boolean statement, and an action to take when a record fails the expectation. The ON VIOLATION clause specifies the action to take, which can be one of the following: warn, drop, or fail. The drop action means that invalid records are dropped from the target dataset before data is written to the target. The failure is reported as a metric for the dataset, which can be viewed by querying the Delta Live Tables event log. The event log contains information such as the number of records that violate an expectation, the number of records dropped, and the number of records written to the target dataset. Reference:
Manage data quality with Delta Live Tables
Monitor Delta Live Tables pipelines
Delta Live Tables SQL language reference

NEW QUESTION # 108
A data engineer has been given a new record of data:
id STRING = 'a1'
rank INTEGER = 6
rating FLOAT = 9.4
Which of the following SQL commands can be used to append the new record to an existing Delta table my_table?

A. INSERT VALUES ( 'a1' , 6, 9.4) INTO my_table
B. INSERT INTO my_table VALUES ('a1', 6, 9.4)
C. UPDATE my_table VALUES ('a1', 6, 9.4)
D. UPDATE VALUES ('a1', 6, 9.4) my_table
E. my_table UNION VALUES ('a1', 6, 9.4)

Answer: B

NEW QUESTION # 109
A data engineer that is new to using Python needs to create a Python function to add two integers together and return the sum?
Which of the following code blocks can the data engineer use to complete this task?

Answer: E

Explanation:
Explanation
https://www.w3schools.com/python/python_functions.asp

NEW QUESTION # 110
......

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