COMPUTER SCIENCE AND ENGINEERING
SQL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Exists
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Not
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IS NULL
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None of the above
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Detailed explanation-1: -The NULL operator is the operator checking the column for the absence of data. The explanation for this response is that the NULL operator is being used in the database to show that a certain region is blank.
Detailed explanation-2: -The IS NULL operator is used to test for empty values (NULL values).
Detailed explanation-3: -Explanation – The Null operator is the operator used to check the column in absence of data. Null operator is being used in the database to showcase that a certain region is blank.
Detailed explanation-4: -Answer: The operator that tests column for the absence of data is an option “B) is NULL operator". The reason for this answer is because the NULL operator is used in the database for representing that a particular field is empty.