
DBMS SQL set2
Quiz
•
Computers
•
University
•
Practice Problem
•
Hard
Sumathi Narayanasamy
Used 4+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following constraint is used to verify the values?
default
primary key
check
not null
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The concept that is used to represent the unknown values______.
Null
Records
Empty
Blank
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A foreign key must_____
be unique
match the field value of a primary key in a related table
be defined in all tables in the database
not have a repeated values
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The aggregate function is _____.
DEL()
ADD()
MINIMUM()
AVG()
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The transaction operation used to undo the transactions is _______.
rollback
undo
delete
update
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
SQL allows _______ as attribute values
not null
unique key
null
primary key
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Primary key constraint does not allow ____ values.
integer
Duplicate
character
unique
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