A data analyst at a retail company notices that the daily sales totals in the `sales` Delta table for last Tuesday do not match the report that was generated on that day. The analyst suspects a late-arriving data correction was applied after the original report was run. Which command should the analyst run FIRST to identify what operations were performed on the table around that time?

SELECT * FROM sales VERSION AS OF 0

Which SQL command would you use to view the history of operations performed on a Delta table?

SELECT * FROM table_name.history

What is the most direct way to compare data between two versions of a Delta table?

Run separate queries on each version and compare the results manually or with a UNION

Use the DIFF function on the table

Query the transaction log directly to see row-level changes

What is the primary purpose of the Delta Lake transaction log?

To record every change to the table as a series of ordered transactions, enabling features like time travel and audit

To store user credentials and access control lists for the table

To cache frequently accessed data in memory for faster query performance

To store the actual data files of the table in a columnar format

How can you analyze trends over time using Delta Lake?

By using DESCRIBE HISTORY to get the metric values for each version

By querying multiple historical versions and aggregating metrics for each version

By using the TREND function on the table

By querying the transaction log to get the data values

DatabricksCertified Data Analyst Associate

Domain 5Objective 3

Utilize Delta Lake to Audit and View History, Validate Results, and Compare Historical Results or Trends. DATA-ANALYST-ASSOCIATE Practice Questions (Page 2)

Part of the Section 5: Analyzing Queries domain, which makes up ~17% of our current practice bank. Databricks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~6–10 in this domain), expect 1–2 from this objective — we provide 21 practice questions to prepare you well beyond it. (estimate)

21questions here

5free pages

7concepts

Questions 6–10

6application · medium
A data analyst at a retail company notices that the daily sales totals in the `sales` Delta table for last Tuesday do not match the report that was generated on that day. The analyst suspects a late-arriving data correction was applied after the original report was run. Which command should the analyst run FIRST to identify what operations were performed on the table around that time?
Select an answer first
7foundation · easy
Which SQL command would you use to view the history of operations performed on a Delta table?
Select an answer first
8foundation · easy
What is the most direct way to compare data between two versions of a Delta table?
Select an answer first
9foundation · easy
What is the primary purpose of the Delta Lake transaction log?
Select an answer first
10foundation · easy
How can you analyze trends over time using Delta Lake?
Select an answer first

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