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Why is the WITH CHECK OPTION important for maintaining data integrity when using updatable views?

hard📝 Conceptual Q10 of 15
PostgreSQL - Views and Materialized Views
Why is the WITH CHECK OPTION important for maintaining data integrity when using updatable views?
AIt automatically backs up the base table before updates
BIt disables all DELETE operations on the base table
CIt allows unrestricted updates regardless of view filters
DIt ensures all changes through the view comply with the view's filter conditions
Step-by-Step Solution
Solution:
  1. Step 1: Understand the role of WITH CHECK OPTION in updatable views

    It enforces that any insert or update through the view must satisfy the view's WHERE clause.
  2. Step 2: Recognize its importance for data integrity

    This prevents invalid data from entering the base table through the view.
  3. Final Answer:

    It ensures all changes through the view comply with the view's filter conditions -> Option D
  4. Quick Check:

    WITH CHECK OPTION = enforces data integrity via view filters [OK]
Quick Trick: WITH CHECK OPTION enforces data integrity on view updates [OK]
Common Mistakes:
  • Thinking it backs up data automatically
  • Believing it allows unrestricted updates
  • Assuming it disables deletes

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