Computer Science Unit 3 – Database Management MCQ Question Answers for Various Entrance Exams

 

1. Which datatype can store unstructured data in a column?
a.
b.
c.
d.

2. A field which is ______ for each and every record is called Primary key.
a.
b.
c.
d.

3. Which one of the following commands is used to delete the existing row in a table?
a.
b.
c.
d.

4. ________ are the basic building blocks of a database.
a.
b.
c.
d.

5. Which data type will be appropriate to store information as Salary, Fees, Price etc
a.
b.
c.
d.

6. A database can have only one table.(T/F)
a.
b.

7. Which of the following will help to maintain unique record in the table?
a.
b.
c.
d.

8. All the values in ________ are of same type.
a.
b.
c.
d.

9. Which of the following clause return specific rows?
a.
b.
c.
d.

10. The term "ODBC" stands for____
a.
b.
c.
d.

11. select * from Stud order by “Rollno” ASC;
a.
b.
c.
d.

12. Command to increase the salary of all employees by 15000.(table name emp and column name sal)
a.
b.
c.
d.

13. _______ is the most common DML command.
a.
b.
c.
d.

14. In a table we can have only ______ primary key.
a.
b.
c.
d.

15. Which one of the following is a type of Data Manipulation Command?
a.
b.
c.
d.

16. We can ______ data in table.
a.
b.
c.
d.

17. A Database Management System is a type of _________software.
a.
b.
c.
d.

18. Which of the following is not the date time data types?
a.
b.
c.
d.

19. Duplication of data is called _________.
a.
b.
c.
d.

20. Queries are commands that are used to define the structure and modify the data in a table.(T/F)
a.
b.


 


 
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