PCDE Practice Question: Define data structures and implement SQL for Business Intelligence
This PCDE practice question tests your understanding of define data structures and implement sql for business intelligence. 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.
A company is using BigQuery and needs to implement row-level security so that sales representatives only see their own region's data. Which approach?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use authorized views with WHERE clause filtering by session user's region
Option C is correct because BigQuery authorized views allow you to enforce row-level security by embedding a WHERE clause that filters data based on the session user's region (e.g., using SESSION_USER() or a mapping table). This ensures each sales representative sees only their own region's data without exposing the underlying tables directly.
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 BigQuery column-level security to filter by region
Why it's wrong here
Column-level security restricts access to columns, not rows.
✗
Create separate tables for each region and union in views
Why it's wrong here
This approach is cumbersome to maintain and violates the principle of least privilege.
✓
Use authorized views with WHERE clause filtering by session user's region
Why this is correct
Authorized views can apply row-level filters using SESSION_USER() and a mapping table, ensuring users only see their data.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use IAM conditions at the dataset level
Why it's wrong here
IAM conditions control access at the resource level (dataset), not row-level.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the distinction between column-level security (which restricts columns) and row-level security (which restricts rows), leading candidates to mistakenly choose column-level options when row filtering is required.
Detailed technical explanation
How to think about this question
Under the hood, authorized views leverage BigQuery's shared dataset permissions, allowing the view to query the source table while the user only has access to the view. The WHERE clause typically uses SESSION_USER() to match against a user-to-region mapping table, enabling dynamic row-level filtering without duplicating data. This approach is critical in multi-tenant environments where data isolation must be maintained without schema proliferation.
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.
TExam Day Tips
→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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Define data structures and implement SQL for Business Intelligence — This question tests Define data structures and implement SQL for Business Intelligence — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use authorized views with WHERE clause filtering by session user's region — Option C is correct because BigQuery authorized views allow you to enforce row-level security by embedding a WHERE clause that filters data based on the session user's region (e.g., using SESSION_USER() or a mapping table). This ensures each sales representative sees only their own region's data without exposing the underlying tables directly.
What should I do if I get this PCDE question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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