Q19. What is row-level security?
RLS policies restrict which rows roles can read or modify. Table owners and BYPASSRLS roles require special consideration, and policies must be tested using the real application role.
Interview tip: explain the core behavior, then mention one operational trade-off or edge case.
Note
Interview approach: define the concept, explain when you use it, and mention one limitation or production consideration.
Concept example
-- Demonstrate the concept with a small query or schema example
SELECT current_database();💡 This short query illustrates the PostgreSQL environment used during examples. In an interview, adapt the example to the specific concept and explain the underlying behavior.
Key Takeaways
- Give a concise definition.
- Explain a real-world use case.
- Mention one trade-off or safety consideration.
Knowledge Check
What does RLS govern?