DatabricksCertified Data Engineer Associate
Domain 3Objective 3
Manipulate Columns, Rows, and Table Structures by Adding, Dropping, Splitting, Renaming Column Names, Applying Filters, and Exploding Arrays. DATA-ENGINEER-ASSOCIATE Practice Questions (Page 2)
Part of the Data Transformation and Modeling domain, which accounts for 22% of the DATA-ENGINEER-ASSOCIATE exam. Databricks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~8–13 in this domain), expect 1–2 from this objective — we provide 15 practice questions to prepare you well beyond it. (estimate)
15questions here
3free pages
8concepts
22%of the exam
Questions 6–10
- 6
Which method renames a column in a DataFrame?
Select an answer first - 7
Which of the following renames column 'a' to 'b' in DataFrame `df`?
Select an answer first - 8
Which method removes duplicate rows from a DataFrame?
Select an answer first - 9
Which function splits a string column into an array of substrings?
Select an answer first - 10
A DataFrame `events` has a column `tags` that is an array of strings. Some rows have `null` in the `tags` column. The engineer needs to create one row per tag, but must include rows where `tags` is null. Which function should be used?
Select an answer first
Finished these 5 questions?
Review the revealed explanations, or continue through the curriculum.
Free Basic Practice is a study aid with revealable answers — not a scored exam. Examers.io is independent and not affiliated with or endorsed by Databricks. “DATA-ENGINEER-ASSOCIATE” is a trademark of its owner, used for identification only.