PostgreSQL - Performance Tuning
Which of the following is the best reason to create an index on a column in PostgreSQL?
Which of the following is the best reason to create an index on a column in PostgreSQL?
easy📝 Conceptual Q11 of 15
Step-by-Step Solution
Solution:
Step 1: Understand what an index does
An index helps the database find rows faster by creating a quick lookup structure.Step 2: Match the purpose to the options
Only speeding up searches matches the purpose of an index; other options are unrelated.Final Answer:
To speed up searches on that column -> Option AQuick Check:
Index = Speed up search [OK]
Quick Trick: Indexes speed up searches, not storage or encryption [OK]
Common Mistakes:
- Thinking indexes reduce database size
- Confusing indexes with backups
- Assuming indexes encrypt data
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