Google PCA Practice Question: Analysing and Optimising Technical and Business Processes
An e-commerce application uses Firestore for product catalog. They need to run complex analytical queries on the catalog data, such as aggregations and joins, without impacting production performance. What is the best approach?
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
✓
Export Firestore data to BigQuery for analytics
Firestore is not designed for analytical queries. Exporting to BigQuery allows running complex analytics without impacting Firestore performance. Using a second Firestore database increases cost but doesn't improve analytics. Cloud SQL does not natively integrate with Firestore. Using the `!=` operator doesn't solve analytical needs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Create a second Firestore database for analytics
Why it's wrong here
Firestore is not optimized for complex aggregations and joins.
- ✗
Use Cloud SQL to query Firestore directly
Why it's wrong here
Cloud SQL cannot query Firestore directly.
- ✗
Use Firestore `!=` operator to filter data
Why it's wrong here
Inequality filters do not solve complex analytical queries.
- ✓
Export Firestore data to BigQuery for analytics
Why this is correct
BigQuery is designed for analytical workloads and integrates with Firestore via exports.
Go deeper
Related to this question
Learn chapter
Introduction to Google Cloud Platform
Key term
Data
Data is raw, unprocessed information, like numbers, words, or measurements, that can be stored, processed, and analyzed by computers.
Key term
BigQuery
BigQuery is a fully managed, serverless data warehouse on Google Cloud that lets you run fast SQL queries on massive datasets without managing any infrastructure.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCA 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 PCA exam.