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Design innovative, scalable, and highly available cloud database solutions →easyMultiple ChoiceObjective-mapped

PCDE Practice Question: Design innovative, scalable, and highly available cloud database solutions

Which database service should you use if your workload requires complex JOINs, ACID transactions, and you want to avoid operational overhead of managing patching and backups?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

Cloud SQL

Cloud SQL is a fully managed relational database service for MySQL, PostgreSQL, and SQL Server that handles patching, backups, and replication. AlloyDB also is managed, but Cloud SQL is more common for standard OLTP. Firestore and Bigtable are NoSQL.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✓

    Cloud SQL

    Why this is correct

    Cloud SQL provides fully managed relational databases with ACID transactions and JOIN support.

  • ✗

    Cloud Bigtable

    Why it's wrong here

    Bigtable is NoSQL, does not support JOINs or ACID transactions.

  • ✗

    Firestore

    Why it's wrong here

    Firestore is NoSQL and does not support complex JOINs.

  • ✗

    Cloud Storage

    Why it's wrong here

    Cloud Storage is object storage, not a database.

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This PCDE practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCDE exam.