Certified Data Analyst Associate
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Question 1
Which of the following layers of the medallion architecture is most commonly used by data analysts?
- A: None of these layers are used by data analysts
- B: Gold
- C: All of these layers are used equally by data analysts
- D: Silver
- E: Bronze
Question 2
A data analyst needs to use the Databricks Lakehouse Platform to quickly create SQL queries and data visualizations. It is a requirement that the compute resources in the platform can be made serverless, and it is expected that data visualizations can be placed within a dashboard.
Which of the following Databricks Lakehouse Platform services/capabilities meets all of these requirements?
- A: Delta Lake
- B: Databricks Notebooks
- C: Tableau
- D: Databricks Machine Learning
- E: Databricks SQL
Question 3
A data analyst is attempting to drop a table my_table. The analyst wants to delete all table metadata and data.
They run the following command:
DROP TABLE IF EXISTS my_table;
While the object no longer appears when they run SHOW TABLES, the data files still exist.
Which of the following describes why the data files still exist and the metadata files were deleted?
- A: The table's data was larger than 10 GB
- B: The table did not have a location
- C: The table was external
- D: The table's data was smaller than 10 GB
- E: The table was managed
Question 4
After running DESCRIBE EXTENDED accounts.customers;, the following was returned:
Now, a data analyst runs the following command:
DROP accounts.customers;
Which of the following describes the result of running this command?
- A: Running SELECT * FROM delta. `dbfs:/stakeholders/customers` results in an error.
- B: Running SELECT * FROM accounts.customers will return all rows in the table.
- C: All files with the .customers extension are deleted.
- D: The accounts.customers table is removed from the metastore, and the underlying data files are deleted.
- E: The accounts.customers table is removed from the metastore, but the underlying data files are untouched.
Question 5
Which of the following should data analysts consider when working with personally identifiable information (PII) data?
- A: Organization-specific best practices for PII data
- B: Legal requirements for the area in which the data was collected
- C: None of these considerations
- D: Legal requirements for the area in which the analysis is being performed
- E: All of these considerations
Question 6
Delta Lake stores table data as a series of data files, but it also stores a lot of other information.
Which of the following is stored alongside data files when using Delta Lake?
- A: None of these
- B: Table metadata, data summary visualizations, and owner account information
- C: Table metadata
- D: Data summary visualizations
- E: Owner account information
Question 7
Which of the following is an advantage of using a Delta Lake-based data lakehouse over common data lake solutions?
- A: ACID transactions
- B: Flexible schemas
- C: Data deletion
- D: Scalable storage
- E: Open-source formats
Question 8
Which of the following benefits of using Databricks SQL is provided by Data Explorer?
- A: It can be used to run UPDATE queries to update any tables in a database.
- B: It can be used to view metadata and data, as well as view/change permissions.
- C: It can be used to produce dashboards that allow data exploration.
- D: It can be used to make visualizations that can be shared with stakeholders.
- E: It can be used to connect to third party BI cools.
Question 9
The stakeholders.customers table has 15 columns and 3,000 rows of data. The following command is run:
After running SELECT * FROM stakeholders.eur_customers, 15 rows are returned. After the command executes completely, the user logs out of Databricks.
After logging back in two days later, what is the status of the stakeholders.eur_customers view?
- A: The view remains available and SELECT * FROM stakeholders.eur_customers will execute correctly.
- B: The view has been dropped.
- C: The view is not available in the metastore, but the underlying data can be accessed with SELECT * FROM delta. `stakeholders.eur_customers`.
- D: The view remains available but attempting to SELECT from it results in an empty result set because data in views are automatically deleted after logging out.
- E: The view has been converted into a table.
Question 10
A data analyst created and is the owner of the managed table my_ table. They now want to change ownership of the table to a single other user using Data Explorer.
Which of the following approaches can the analyst use to complete the task?
- A: Edit the Owner field in the table page by removing their own account
- B: Edit the Owner field in the table page by selecting All Users
- C: Edit the Owner field in the table page by selecting the new owner's account
- D: Edit the Owner field in the table page by selecting the Admins group
- E: Edit the Owner field in the table page by removing all access
Question 11
A data analyst has a managed table table_name in database database_name. They would now like to remove the table from the database and all of the data files associated with the table. The rest of the tables in the database must continue to exist.
Which of the following commands can the analyst use to complete the task without producing an error?
- A: DROP DATABASE database_name;
- B: DROP TABLE database_name.table_name;
- C: DELETE TABLE database_name.table_name;
- D: DELETE TABLE table_name FROM database_name;
- E: DROP TABLE table_name FROM database_name;
Question 12
A data analyst has recently joined a new team that uses Databricks SQL, but the analyst has never used Databricks before. The analyst wants to know where in Databricks SQL they can write and execute SQL queries.
On which of the following pages can the analyst write and execute SQL queries?
- A: Data page
- B: Dashboards page
- C: Queries page
- D: Alerts page
- E: SQL Editor page
Question 13
A data analyst runs the following command:
SELECT age, country -
FROM my_table -
WHERE age >= 75 AND country = 'canada';
Which of the following tables represents the output of the above command?
- A:
- B:
- C:
- D:
- E:
Question 14
A data analyst runs the following command:
INSERT INTO stakeholders.suppliers TABLE stakeholders.new_suppliers;
What is the result of running this command?
- A: The suppliers table now contains both the data it had before the command was run and the data from the new_suppliers table, and any duplicate data is deleted.
- B: The command fails because it is written incorrectly.
- C: The suppliers table now contains both the data it had before the command was run and the data from the new_suppliers table, including any duplicate data.
- D: The suppliers table now contains the data from the new_suppliers table, and the new_suppliers table now contains the data from the suppliers table.
- E: The suppliers table now contains only the data from the new_suppliers table.
Question 15
A business analyst has been asked to create a data entity/object called sales_by_employee. It should always stay up-to-date when new data are added to the sales table. The new entity should have the columns sales_person, which will be the name of the employee from the employees table, and sales, which will be all sales for that particular sales person. Both the sales table and the employees table have an employee_id column that is used to identify the sales person.
Which of the following code blocks will accomplish this task?
- A:
- B:
- C:
- D:
- E:
Question 16
A data analyst has been asked to use the below table sales_table to get the percentage rank of products within region by the sales:
The result of the query should look like this:
Which of the following queries will accomplish this task?
- A:
- B:
- C:
- D:
- E:
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