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 Google Cloud database service is designed for hybrid transactional and analytical processing (HTAP) with a built-in columnar engine?
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
✓
AlloyDB for PostgreSQL
AlloyDB for PostgreSQL is a fully managed database with a columnar engine that accelerates analytical queries on transactional data. Cloud Spanner offers an analytics interface, but AlloyDB explicitly mentions a columnar engine for HTAP.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
BigQuery
Why it's wrong here
BigQuery is purely analytical, not transactional.
- ✗
Cloud SQL
Why it's wrong here
Cloud SQL does not have a built-in columnar engine for HTAP.
- ✗
Cloud Spanner
Why it's wrong here
Spanner supports analytics via a separate interface, but lacks a columnar engine like AlloyDB.
- ✓
AlloyDB for PostgreSQL
Why this is correct
AlloyDB includes a columnar engine for fast analytical queries on transactional data.
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