SQL Server Course for Beginners with 100+ examples - FOREIGN KEY Constraint

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Information Technology (IT), Architecture
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University
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Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of the NOT NULL constraint in SQL?
To allow duplicate values in a column
To ensure a column cannot have null values
To automatically generate unique values
To enforce a specific data type
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When defining a table, which SQL command is used to create it?
ALTER TABLE
INSERT INTO
SELECT FROM
CREATE TABLE
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which field in the example table is set as NOT NULL?
City
Salary
Employee Name
Department
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens if you try to insert a null value into a NOT NULL column?
The null value is accepted without any issue
The null value is automatically converted to zero
An error is generated
The database ignores the null value
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which SQL command is used to insert data into a table?
SELECT
UPDATE
INSERT INTO
DELETE
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