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Which of the following best describes an updatable view in SQL?

easy📝 Conceptual Q11 of 15
SQL - Views
Which of the following best describes an updatable view in SQL?
AA view created using multiple tables joined together.
BA view that only shows data but does not allow any changes.
CA view that contains aggregate functions like SUM or COUNT.
DA view that allows you to insert, update, or delete rows through it.
Step-by-Step Solution
Solution:

  1. Step 1: Understand what an updatable view is

    An updatable view lets you change data (insert, update, delete) through the view as if it were a table.

  2. Step 2: Compare options to definition

    Options B, C, and D describe views that are either read-only or complex and usually not updatable.

  3. Final Answer:

    A view that allows you to insert, update, or delete rows through it. -> Option D

  4. Quick Check:

    Updatable view = allows data changes [OK]
Quick Trick: Updatable views let you change data through them [OK]
Common Mistakes:
MISTAKES
  • Thinking all views allow data changes
  • Confusing aggregate views as updatable
  • Assuming joins always allow updates

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