- A
Use Cloud IAM conditions on the dataset to filter by tenant_id
Why wrong: IAM conditions cannot filter rows; they control access to resources, not data content.
- B
Use a single dataset with authorized views that filter by tenant_id, granting each tenant access to their view
Authorized views provide row-level security without duplicating data. Easy to add new tenants.
- C
Create a separate dataset for each tenant and grant the tenant access to their dataset
Why wrong: Managing hundreds of datasets is overhead. Also, quotas on number of datasets may be hit.
- D
Use a single table with a tenant_id column and enable column-level security to restrict access
Why wrong: BigQuery does not support row-level security natively; column-level security only hides columns, not rows.
PDE Designing Data Processing Systems Practice Question
This PDE practice question tests your understanding of designing data processing systems. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
You are designing a BigQuery data warehouse for a multi-tenant SaaS application. Each tenant's data must be isolated and queried only by that tenant. You need to minimise management overhead and allow tenants to be added dynamically. Which approach should you use?
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
Use a single dataset with authorized views that filter by tenant_id, granting each tenant access to their view
Authorized views in a shared dataset allow you to create row-level security. By creating a view per tenant that filters by tenant_id, you can grant each tenant access only to its view. This avoids managing multiple datasets and is scalable.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use Cloud IAM conditions on the dataset to filter by tenant_id
Why it's wrong here
IAM conditions cannot filter rows; they control access to resources, not data content.
- ✓
Use a single dataset with authorized views that filter by tenant_id, granting each tenant access to their view
Why this is correct
Authorized views provide row-level security without duplicating data. Easy to add new tenants.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create a separate dataset for each tenant and grant the tenant access to their dataset
Why it's wrong here
Managing hundreds of datasets is overhead. Also, quotas on number of datasets may be hit.
- ✗
Use a single table with a tenant_id column and enable column-level security to restrict access
Why it's wrong here
BigQuery does not support row-level security natively; column-level security only hides columns, not rows.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
Identify which PDE exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Questions learners often ask
What does this PDE question test?
Designing Data Processing Systems — This question tests Designing Data Processing Systems — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use a single dataset with authorized views that filter by tenant_id, granting each tenant access to their view — Authorized views in a shared dataset allow you to create row-level security. By creating a view per tenant that filters by tenant_id, you can grant each tenant access only to its view. This avoids managing multiple datasets and is scalable.
What should I do if I get this PDE question wrong?
Identify which PDE exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
This PDE 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 PDE exam.
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