Solution:Step 1: Understand the view's conditionThe view only includes rows where membership_level = 'premium'.Step 2: Analyze the update attemptChanging membership_level to 'basic' would exclude the row from the view.Step 3: Effect of WITH CHECK OPTIONWITH CHECK OPTION prevents updates that cause r

[Solved] Consider the view:CREATE VIEW premium_members AS SELECT * FROM members WHERE membership_level = 'premium' WITH CHECK OPTION;Why would an attempt to update a member's membership_level from 'premium'... | PostgreSQL

PostgreSQL - Views and Materialized Views

Consider the view:
CREATE VIEW premium_members AS SELECT * FROM members WHERE membership_level = 'premium' WITH CHECK OPTION;
Why would an attempt to update a member's membership_level from 'premium' to 'basic' through this view fail?

ABecause the updated row would no longer satisfy the view's WHERE condition, violating the CHECK OPTION.

BBecause views with CHECK OPTION do not allow any updates.

CBecause the base table does not permit updates on the membership_level column.

DBecause the view does not include the membership_level column.

Step-by-Step Solution

Solution:

Step 1: Understand the view's condition
The view only includes rows where membership_level = 'premium'.
Step 2: Analyze the update attempt
Changing membership_level to 'basic' would exclude the row from the view.
Step 3: Effect of WITH CHECK OPTION
WITH CHECK OPTION prevents updates that cause rows to no longer satisfy the view's condition.
Final Answer:
Because the updated row would no longer satisfy the view's WHERE condition, violating the CHECK OPTION. -> Option A
Quick Check:
Updates must keep rows within view condition [OK]

Quick Trick: Updates violating view condition are rejected [OK]

Common Mistakes:

Assuming CHECK OPTION disallows all updates
Blaming base table constraints without checking view condition
Thinking the view excludes membership_level column

Master "Views and Materialized Views" in PostgreSQL

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Visual Try Challenge Project Recall Time

Consider the view:

Step 1: Understand the view's condition

Step 2: Analyze the update attempt

Step 3: Effect of WITH CHECK OPTION

Final Answer:

Quick Check:

Want More Practice?