PostgreSQL - Triggers in PostgreSQL
You want to create an audit logging system that records who made changes and when. Which combination of PostgreSQL features should you use?
You want to create an audit logging system that records who made changes and when. Which combination of PostgreSQL features should you use?
hard📝 Workflow Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Identify how to capture user and time in audit logs
Using trigger functions, you can insert session_user and current_timestamp into audit tables on data changes.Step 2: Exclude unrelated features
Views and indexes do not capture user or time; foreign keys link data but don't log changes.Final Answer:
Trigger functions with session_user and current_timestamp inserted into audit table -> Option CQuick Check:
Audit logs need triggers capturing user and time [OK]
Quick Trick: Use triggers with session_user and timestamp for audit [OK]
Common Mistakes:
- Using views which don't log changes
- Relying on indexes for audit data
- Confusing foreign keys with audit logging
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