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What is the main advantage of using a JSON column in a PostgreSQL table?

easy📝 Conceptual Q1 of 15
PostgreSQL - JSON and JSONB
What is the main advantage of using a JSON column in a PostgreSQL table?
AIt enforces strict data types on all stored values.
BIt allows storing flexible, schema-less data within a relational table.
CIt automatically creates indexes on all JSON keys.
DIt compresses data to save disk space.
Step-by-Step Solution
Solution:
  1. Step 1: Understand JSON column purpose

    A JSON column lets you store data without fixed columns, useful for flexible data.
  2. Step 2: Compare options

    Only It allows storing flexible, schema-less data within a relational table. correctly describes this flexibility; others are incorrect features.
  3. Final Answer:

    It allows storing flexible, schema-less data within a relational table. -> Option B
  4. Quick Check:

    JSON column purpose = Flexible data storage [OK]
Quick Trick: JSON columns store flexible data without fixed schema [OK]
Common Mistakes:
  • Thinking JSON columns enforce strict types
  • Assuming JSON columns auto-index all keys
  • Believing JSON columns compress data automatically

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