You notice that inserting rows into a table is very slow after adding several indexes. What is the most likely cause?

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SQL - Indexes and Query Performance

AIndexes cause syntax errors during inserts.

BIndexes speed up inserts, so the problem is elsewhere.

CThe table is too small for indexes to matter.

DIndexes slow down inserts because each insert updates all indexes.

Step-by-Step Solution

Solution:

Step 1: Understand index impact on inserts
Each insert must update all indexes to keep them current, which adds overhead and slows inserts.
Step 2: Identify cause of slow inserts
Adding many indexes increases this overhead, causing slower insert performance.
Final Answer:
Indexes slow down inserts because each insert updates all indexes. -> Option D
Quick Check:
More indexes = slower inserts [OK]

Quick Trick: More indexes mean slower inserts due to update overhead [OK]

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