[Solved] In PostgreSQL, what capability does a Foreign Data Wrapper (FDW) provide? — Ans: It enables querying and modifying data stored in external data sources as if... | PostgreSQL

PostgreSQL - Advanced Features

In PostgreSQL, what capability does a Foreign Data Wrapper (FDW) provide?

AIt enables querying and modifying data stored in external data sources as if they were local tables.

BIt creates backup copies of local tables automatically.

CIt encrypts data stored in local tables for security.

DIt optimizes local query execution plans for faster performance.

Step-by-Step Solution

Solution:

Step 1: Understand FDW purpose
FDW allows PostgreSQL to access external data sources transparently.
Step 2: Evaluate options
Only It enables querying and modifying data stored in external data sources as if they were local tables. describes FDW's role of querying external data as local tables.
Final Answer:
It enables querying and modifying data stored in external data sources as if they were local tables. -> Option A
Quick Check:
FDW connects external data sources to PostgreSQL [OK]

Quick Trick: FDW lets PostgreSQL treat external data like local tables [OK]

Common Mistakes:

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In PostgreSQL, what capability does a Foreign Data Wrapper (FDW) provide?