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Professional Data Engineer
Topics
Change Data Capture

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.

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Concept

Change Data Capture

Topic in 5 exam domains

Change Data Capture · Concept
change data capture · Feature
Change data capture · Concept
Change Data Capture · Feature
change data capture · Concept

Also called: BigQuery change data capture, CDC

A migration phase where real-time changes to the source database are continuously replicated to the destination instance.

Where this appears on the exam

4 objectives in 3 of 5 domains

Domain 1
Designing data processing systems
~22% of exam
1. 1.4Designing data migrations
  - Analyzing current stakeholder needs, users, processes, and technologies, and creating a plan to get to desired state
  - Planning migration and validation to Google Cloud (e.g., BigQuery Data Transfer Service, Database Migration Service, Transfer Appliance, Google Cloud networking, Datastream)
Domain 2
Ingesting and processing the data
~25% of exam
1. 2.2Building the pipelines
  - Integrating with new data sources
Domain 3
Storing the data
~20% of exam
1. 3.4Designing for a data platform
  - Building a federated governance model for distributed data systems

Related topics

This topicWorks alongsideApplied

Change Data CaptureConcept

differential queryingConcept Database Migration ServiceService

Points to what builds on itWorks with or alternative toHover or tap a line to see what connects the two

Change Data Capture is an alternative to differential querying From the official documentation: “If no database management system feature exists that supports observing all changes in the correct order, you can use *differential querying* as an alternative.”
Database Migration Service depends on Change Data Capture From the official documentation: “Database Migration Service requires that you enable the change data capture mechanism on your source database for the migration.”

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Last updated October 15, 2026

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