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Databricks-Certified-Data-Engineer-Associate VCE Exam Simulator - Free Databricks-Certified-Data-Engineer-Associate Braindumps

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Databricks Certified Data Engineer Associate Exam Sample Questions (Q96-Q101):

NEW QUESTION # 96
Which of the following commands will return the number of null values in the member_id column?

A. SELECT count(member_id) FROM my_table;
B. SELECT count_null(member_id) FROM my_table;
C. SELECT null(member_id) FROM my_table;
D. SELECT count(member_id) - count_null(member_id) FROM my_table;
E. SELECT count_if(member_id IS NULL) FROM my_table;

Answer: E

Explanation:
Explanation
https://docs.databricks.com/en/sql/language-manual/functions/count.html Returns A BIGINT.
If * is specified also counts row containing NULL values.
If expr are specified counts only rows for which all expr are not NULL.
If DISTINCT duplicate rows are not counted.

NEW QUESTION # 97
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: B

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

NEW QUESTION # 98
An engineering manager uses a Databricks SQL query to monitor ingestion latency for each data source. 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 updated each day?

A. They can schedule the query to run every 12 hours from the Jobs UI.
B. They can schedule the query to refresh every 1 day from the SQL endpoint's page in Databricks SQL.
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 # 99
A data engineer only wants to execute the final block of a Python program if the Python variable day_of_week is equal to 1 and the Python variable review_period is True.
Which of the following control flow statements should the data engineer use to begin this conditionally executed code block?

A. if day_of_week = 1 and review_period:
B. if day_of_week = 1 & review_period: = "True":
C. if day_of_week = 1 and review_period = "True":
D. if day_of_week == 1 and review_period == "True":
E. if day_of_week == 1 and review_period:

Answer: D

NEW QUESTION # 100
A data engineer only wants to execute the final block of a Python program if the Python variable day_of_week is equal to 1 and the Python variable review_period is True.
Which of the following control flow statements should the data engineer use to begin this conditionally executed code block?

A. if day_of_week = 1 and review_period:
B. if day_of_week = 1 & review_period: = "True":
C. if day_of_week == 1 and review_period:
D. if day_of_week = 1 and review_period = "True":
E. if day_of_week == 1 and review_period == "True":

Answer: C

Explanation:
In Python, the == operator is used to compare the values of two variables, while the = operator is used to assign a value to a variable. Therefore, option A and E are incorrect, as they use the = operator for comparison.
Option B and C are also incorrect, as they compare the review_period variable to a string value "True", which is different from the boolean value True. Option D is the correct answer, as it uses the == operator to compare the day_of_week variable to the integer value 1, and the and operator to check if both conditions are true. If both conditions are true, then the final block of the Python program will be executed. References: [Python Operators], [Python If ... Else]

NEW QUESTION # 101
......

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