Prepared with AI assistance by Pass-IT. Vendor sources support exam facts; the exercises and study recommendations are ours.
Choose Data Engineer Associate if building and explaining basic data flows still needs work. Consider Professional when you can reason about a pipeline’s operation from ingestion through deployment, including failures, access and cost. Professional is a different preparation scope, rather than an automatic next step after Associate.
The Associate certification covers foundational ingestion, transformation, PySpark ETL, Lakeflow Jobs, CI/CD, governance and troubleshooting. The Professional certification extends into advanced production reliability, governance, cost, observability, deployment and Python/SQL. These official pages were checked on September 9, 2026.
Both exams use multiple-choice questions, rather than practical coding tasks. Associate has 45 scored questions in 90 minutes; Professional has 59 in 120 minutes. Unscored questions are possible. Neither has prerequisites, and related training is recommended. Both require understanding code; implementing examples can strengthen that understanding. The official certification pages above document the formats.
An order batch to work through
This is our own exercise. A target table contains order A with amount 40. An incoming batch contains A with 40, B with 60 and another B with 60. The source owner confirms that B was delivered twice. The requirement is one current row per order, with no new updates in this batch.
Before running anything, write down the expected rows and total. Then deduplicate the incoming batch using the verified order key and apply an insert-only MERGE matching on order ID. The proposed answer is A with 40 and B with 60: two rows, total 100. Replaying the same cleaned batch should leave that result unchanged.
Appending the raw batch creates duplicates. MERGE alone does not remove duplicates within new source data: Databricks’ merge documentation explains why the source batch must be deduplicated within itself. This exercise does not establish a general solution for concurrent writes or changing order amounts.
Now give the two B records different amounts. Stop and define a business version or conflict policy before merging; choosing an arbitrary first row or summing silently would invent meaning.
Use your explanation to choose
For Associate preparation, implement the example, justify the key and check the rows. For Professional preparation, extend your own lab with retry and failure tests, alerts, access checks and cost observations. Both learners can write code. Choose the scope whose decisions you still need to explain, then explore original Pass-IT practice questions with explanations.