Asked by Deneatra Caesar on Jul 25, 2024
Verified
What happens when you run a query with the Is Null criterion in the Product Type field?
A) The results include only records with a correct Product Type value.
B) The query deletes the values in the Product Type field.
C) The query moves records with no Product Type value to a history table.
D) The results include only records with no Product Type value.
Is Null
A condition in databases used to check if a field's value is absent or contains no data.
Query
A request for data or information from a database table or combination of tables, often written in SQL, to retrieve or manipulate data.
Product Type
A classification or category that differentiates products based on their characteristics, uses, or other attributes.
- Understand how to query for null values and the implication of using "Is Null" criterion.
Verified Answer
JO
Jacinta OyugiJul 29, 2024
Final Answer :
D
Explanation :
When you run a query with the Is Null criterion in the Product Type field, the results will include only records with no Product Type value. This is because the Is Null criterion is asking for records where the value in the Product Type field is null (i.e. has no value). Therefore, the query will only return records where the Product Type field is empty.
Learning Objectives
- Understand how to query for null values and the implication of using "Is Null" criterion.