Question

A NULL value can be included in the data being added to a table by explicitly entering the word NULL. _________________________ ​

a. True
b. False
c. Depends on the database
d. Not applicable

Answer 1

It is true that a NULL value can be included in the data being added to a database table by explicitly entering the word NULL, provided the column allows for NULL values.

Step-by-step explanation:

A NULL value can indeed be included in the data being added to a table by explicitly entering the word NULL in most SQL-based database systems. This statement is true. When you are inserting or updating data in a database table, if a particular column is designed to allow NULL values, and you want to set that column's value to NULL, you specify this with the word NULL.

However, it is important to differentiate between inserting the actual word 'NULL' as a string and using NULL as a symbol for the absence of value. To specify a lack of value, do not put quotes around NULL.