[Solved] How does creating a single column index on a frequently updated column affect database performance? — Ans: It may slow down updates because the index must be maintained | SQL

SQL - Indexes and Query Performance

How does creating a single column index on a frequently updated column affect database performance?

AIt may slow down updates because the index must be maintained

BIt speeds up updates by organizing data

CIt deletes old data automatically

DIt prevents updates on that column

Step-by-Step Solution

Solution:

Step 1: Understand index maintenance during updates
Indexes must be updated whenever the indexed column changes, adding overhead.
Step 2: Analyze impact on frequently updated columns
Frequent updates cause extra work to keep the index current, slowing update speed.
Final Answer:
It may slow down updates because the index must be maintained -> Option A
Quick Check:
Indexes slow updates due to maintenance [OK]

Quick Trick: Indexes speed reads but slow writes on updated columns [OK]

Common Mistakes:

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How does creating a single column index on a frequently updated column affect database performance?