Certifications
Timed multiple-choice exams. Pass and you get a verifiable credential you can add to LinkedIn.
Multiple choice, drawn from a pool so no two attempts match.
The clock runs on the server. Answers save as you go; you can leave and resume.
Graded server-side the moment you submit. Unanswered counts wrong.
A verifiable link anyone can check, and a one-click add to LinkedIn.
SQL for Data Engineering — Associate
Window functions, set logic and query shaping for pipeline work. Questions are drawn from a pool, so no two attempts are identical.
From your practice history on these topics, not from past attempts.
Window functions, set logic and query shaping for pipeline work.
Transformations, joins, window functions, partitioning and tuning.
MERGE, time travel, OPTIMIZE and schema evolution.
Collections, iterators, file handling and typing.
Warehouses and credits, micro-partitions, loading, cloning and access control.
OneLake, lakehouse against warehouse, Direct Lake, pipelines and capacity.
Auto Loader, jobs and clusters, Unity Catalog, and what actually costs money.
Skew, AQE, shuffle sizing and join strategy.
Grain, slowly changing dimensions, medallion and conformed dimensions.
Matching, survivorship, hierarchies, stewardship and the implementation styles.
CodeArena credentials are issued by GeekCoders. They are not vendor certifications and are not affiliated with Databricks, the Apache Software Foundation, or any other organization.