Google did not build PCDE for people starting with a blank sheet. Migration carries close to a quarter of the paper, which tells you exactly who the exam expects in the chair.
Google Cloud Database Engineer Certification: A Quarter Is Migration
GCP-PCDE
Best Workable Tips Earn Google GCP-PCDE Certification
The Google GCP-PCDE exam preparation consists of using multiple resources such as self-research or joining a study group.