Professional Data Engineer

Build and operate the data processing systems behind analytics and ML on Google Cloud, including BigQuery, Dataflow, and Pub/Sub, and track your readiness for the Professional Data Engineer exam.

Advanced

Prepare and test your skills

Advanced

Prepare and test your skills

Google Cloud feature

Combine transform

Topic in 1 exam domain

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Also called: Combine

A transform mentioned for grouping elements by key and for sublinear-space aggregation.

Where this appears on the exam

1 subdomain in 1 of 5 domains

Domain 2
Ingesting and processing the data
~25% of exam
1. 2.2Building the pipelines
  - Streaming (e.g., windowing, late arriving data)

How learners score on this topic

Last updated October 23, 2026

Professional Data Engineer

Build and operate the data processing systems behind analytics and ML on Google Cloud, including BigQuery, Dataflow, and Pub/Sub, and track your readiness for the Professional Data Engineer exam.

Advanced

Prepare and test your skills

Advanced

Prepare and test your skills

Google Cloud feature

Combine transform

Topic in 1 exam domain

X LinkedIn Facebook Reddit

Also called: Combine

A transform mentioned for grouping elements by key and for sublinear-space aggregation.

Where this appears on the exam

1 subdomain in 1 of 5 domains

Domain 2
Ingesting and processing the data
~25% of exam
1. 2.2Building the pipelines
  - Streaming (e.g., windowing, late arriving data)

How learners score on this topic

Last updated October 23, 2026