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What is the main purpose of creating an index on a materialized view in PostgreSQL?

easy📝 Conceptual Q11 of 15
PostgreSQL - Views and Materialized Views
What is the main purpose of creating an index on a materialized view in PostgreSQL?
ATo speed up query performance on the materialized view
BTo automatically refresh the materialized view
CTo store the materialized view data physically
DTo prevent the materialized view from being updated
Step-by-Step Solution
Solution:

  1. Step 1: Understand what an index does

    An index helps the database find data faster by creating a quick lookup structure.

  2. Step 2: Apply this to materialized views

    Since materialized views store query results physically, indexing them speeds up queries on that stored data.

  3. Final Answer:

    To speed up query performance on the materialized view -> Option A

  4. Quick Check:

    Indexing = Faster queries [OK]
Quick Trick: Indexes speed up data retrieval on stored results [OK]
Common Mistakes:
  • Thinking indexes refresh the view automatically
  • Confusing storage with indexing
  • Believing indexes prevent updates

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