Free Databricks-Certified-Professional-Data-Engineer Exam Braindumps
Certified Data Engineer Professional Questions 97–104 (page: 14)

A data architect has heard about Delta Lake's built-in versioning and time travel capabilities. For auditing purposes, they have a requirement to maintain a full record of all valid street addresses as they appear in the customers table.

The architect is interested in implementing a Type 1 table, overwriting existing records with new values and relying on Delta Lake time travel to support long-term auditing. A data engineer on the project feels that a Type 2 table will provide better performance and scalability.

Which piece of information is critical to this decision?

A table named user_ltv is being used to create a view that will be used by data analysts on various teams. Users in the workspace are configured into groups, which are used for setting up data access using ACLs.

The user_ltv table has the following schema:

email STRING, age INT, ltv INT

The following view definition is executed:



An analyst who is not a member of the auditing group executes the following query:

SELECT * FROM user_ltv_no_minors

Which statement describes the results returned by this query?

The data governance team is reviewing code used for deleting records for compliance with GDPR. The following logic has been implemented to propagate delete requests from the user_lookup table to the user_aggregates table.



Assuming that user_id is a unique identifying key and that all users that have requested deletion have been removed from the user_lookup table, which statement describes whether successfully executing the above logic guarantees that the records to be deleted from the user_aggregates table are no longer accessible and why?

The data engineering team has been tasked with configuring connections to an external database that does not have a supported native connector with Databricks. The external database already has data security configured by group membership. These groups map directly to user groups already created in Databricks that represent various teams within the company.

A new login credential has been created for each group in the external database. The Databricks Utilities

Secrets module will be used to make these credentials available to Databricks users.

Assuming that all the credentials are configured correctly on the external database and group membership is properly configured on Databricks, which statement describes how teams can be granted the minimum necessary access to using these credentials?

Which indicators would you look for in the Spark UI's Storage tab to signal that a cached table is not performing optimally? Assume you are using Spark's MEMORY_ONLY storage level.

What is the first line of a Databricks Python notebook when viewed in a text editor?

Which statement describes a key benefit of an end-to-end test?

The Databricks CLI is used to trigger a run of an existing job by passing the job_id parameter. The response that the job run request has been submitted successfully includes a field run_id.

Which statement describes what the number alongside this field represents?