SQL Multiple choices


Total available count: 51
Subject - Databases
Subsubject - SQL

The NOT NULL constraint enforces a column to not accept null values.


 

 

 

 



B


Solution:-

SQL NOT NULL Constraint

By default, a column can hold NULL values. The NOT NULL constraint enforces a column to NOT accept NULL values. This enforces a field to always contain a value, which means that you cannot insert a new record, or update a record without adding a value to the particular field.

The following SQL ensures that the "ID", "SubCourseName", and "CourseName" columns will NOT accept NULL values when the "Slightbook" table is created:

Example

CREATE TABLE Slightbook (ID int NOT NULL, CourseName varchar(255) NOT NULL, SubCourseName varchar(255) NOT NULL, Duration int);

 




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