[Solved] What is a key difference between a materialized view and a regular view in PostgreSQL? — Ans: A materialized view stores data physically, while a regular view does not store... | PostgreSQL

PostgreSQL - Views and Materialized Views

What is a key difference between a materialized view and a regular view in PostgreSQL?

AA regular view stores data physically, while a materialized view does not store data.

BNeither materialized nor regular views store data physically.

CBoth materialized and regular views store data physically.

DA materialized view stores data physically, while a regular view does not store data.

Step-by-Step Solution

Solution:

Step 1: Understand storage behavior of views
Regular views are virtual tables that do not store data physically; they run the underlying query each time.
Step 2: Understand materialized view storage
Materialized views store the query result physically on disk, allowing faster access but requiring refresh to update.
Final Answer:
A materialized view stores data physically, while a regular view does not store data. -> Option D
Quick Check:
Storage difference = B [OK]

Quick Trick: Materialized views store data; regular views do not [OK]

Common Mistakes:

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What is a key difference between a materialized view and a regular view in PostgreSQL?