Free Databricks-Certified-Data-Engineer-Associate Exam Dumps

Question 6

Which of the following describes the relationship between Gold tables and Silver tables?

A. Gold tables are more likely to contain aggregations than Silver tables.
B. Gold tables are more likely to contain valuable data than Silver tables.
C. Gold tables are more likely to contain a less refined view of data than Silver tables.
D. Gold tables are more likely to contain more data than Silver tables.
E. Gold tables are more likely to contain truthful data than Silver tables.

Correct Answer:A
In some data processing pipelines, especially those following a typical "Bronze-Silver-Gold" data lakehouse architecture, Silver tables are often considered a more refined version of the raw or Bronze data. Silver tables may include data cleansing, schema enforcement, and some initial transformations. Gold tables, on the other hand, typically represent a stage where data is further enriched, aggregated, and processed to provide valuable insights for analytical purposes. This could indeed involve more aggregations compared to Silver tables.

Question 7

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:
Databricks-Certified-Data-Engineer-Associate dumps exhibit
Which of the following lines of code fills in the above blank to successfully complete the task?

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

Correct Answer:B

Question 8

In which of the following scenarios should a data engineer select a Task in the Depends On field of a new Databricks Job Task?

A. When another task needs to be replaced by the new task
B. When another task needs to fail before the new task begins
C. When another task has the same dependency libraries as the new task
D. When another task needs to use as little compute resources as possible
E. When another task needs to successfully complete before the new task begins

Correct Answer:E

Question 9

Which of the following commands can be used to write data into a Delta table while avoiding the writing of duplicate records?

A. DROP
B. IGNORE
C. MERGE
D. APPEND
E. INSERT

Correct Answer:C
To write data into a Delta table while avoiding the writing of duplicate records, you can use the MERGE command. The MERGE command in Delta Lake allows you to combine the ability to insert new records and update existing records in a single atomic operation. The MERGE command compares the data being written with the existing data in the Delta table based on specified matching criteria, typically using a primary key or unique identifier. It then performs conditional actions, such as inserting new records or updating existing records, depending on the comparison results. By using the MERGE command, you can handle the prevention of duplicate records in a more controlled and efficient manner. It allows you to synchronize and reconcile data from different sources while avoiding duplication and ensuring data integrity.

Question 10

A data engineer has a Python notebook in Databricks, but they need to use SQL to accomplish a specific task within a cell. They still want all of the other cells to use Python without making any changes to those cells.
Which of the following describes how the data engineer can use SQL within a cell of their Python notebook?

A. It is not possible to use SQL in a Python notebook
B. They can attach the cell to a SQL endpoint rather than a Databricks cluster
C. They can simply write SQL syntax in the cell
D. They can add %sql to the first line of the cell
E. They can change the default language of the notebook to SQL

Correct Answer:D