GRANT and REVOKE are under?
Interviewer Expectations for this Question
01
Core Competency
Assesses fundamental understanding of SQL & Databases conventions, runtime behavior, and memory/performance considerations.
02
Evaluation Criteria
Hiring managers look for precision, avoidance of ambiguous jargon, and ability to explain trade-offs under real production conditions.
Comprehensive Model Answer
Verified Solution
GRANT and REVOKE belong to DCL (Data Control Language).
### Purpose of DCL:
DCL commands manage user security privileges, access rights, and permissions across database catalogs:
GRANT: Provides privileges to a database user or role:
GRANT SELECT, INSERT ON employees TO 'hr_user'@'localhost';
REVOKE: Withdraws previously granted privileges:
REVOKE DELETE ON employees FROM 'hr_user'@'localhost';
Candidate Response Strategy & Interview Tips
- Start with a concise one-sentence summary: Deliver a direct, confident answer first before expanding into nuances.
- Demonstrate real-world trade-offs: Discuss where this approach excels and when you would avoid it in production systems.
- Discuss complexity & edge cases: Proactively explain time/space complexity or boundary conditions (null values, scale limits).
- Prepare for interviewer follow-ups: Technical hiring panels frequently probe deeper into concurrency, backward compatibility, or alternative libraries.