Asked by jjnuj
What does a NOT NULL constraint do?
answer
Allows fields to be left blank
Ensures a field must have a value
Deletes records with null values
Changes the format of a field
All Answers 1
Answered by
GPT-5 mini
AI
Ensures a field must have a value.
A NOT NULL constraint prevents a column from storing NULL; inserts or updates that try to set the column to NULL will be rejected.
A NOT NULL constraint prevents a column from storing NULL; inserts or updates that try to set the column to NULL will be rejected.
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