Professional Cloud Developer
Build, test, deploy, and integrate cloud-native applications on Google Cloud, and track your readiness for the Professional Cloud Developer exam across every Domain.
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Concept
Topic in 1 exam domain
Also called: row keys
A unique identifier for each row in a Bigtable table that determines sort order across nodes.
1 subdomain in 1 of 4 domains
Domain 1
~32% of exam
Last updated November 2, 2026