2nd puc computer science chapter 14 mcq

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1. Which of the following attributes can be considered as a choice for primary key?





ANSWER= C) Rollno

 

2. What is the full form of SQL?





ANSWER= A) Structured Query Language

 

3. What is the full form of DDL?





ANSWER= C) Data Definition Language

 

4. What does DML stand for?





ANSWER= D) Data Manipulation Language

 

5. Which of the following keywords will you use in the following query to display the unique values of a column dept_name! Select ______dept_name from company;





ANSWER= C) Distinct

 

6. The _______clause of select query allows us to select only those rows in the result that satisfy a specified condition





ANSWER= A) where

 

7. Consider following SQL statement. What type of statement is this? Select * from employee;





ANSWER= A) DML

 

8. The term _____is used to refer to a field in a table





ANSWER= A) Attribute

 

9. By default, ORDER by Clause lists the results in _______order





ANSWER= C) Ascending

 

10. The ______keyword eliminates redundant data





ANSWER= C) DISTINCT

 

11. The _________constraint provides a default value to column when the Insert into statement does not provide a specific value.





ANSWER= A) DEFAULT

 

12. The __________constraint ensures that all values in a column are distinct.





ANSWER= B) UNIQUE

 

13. The ___________constraint ensures that all values in column satisfy certain conditions.





ANSWER= C) CHECK

 

14. ___________ is used to identify each row in table.





ANSWER= D) PRIMARY KEY

 

15. To delete some data from tables ________________command is used.





ANSWER= A) DELETE

 

16. The _________command lets your drop a table from the database.





ANSWER= D) DROP

 

17. ____________Key is non-key column of a table (child table) that draws its values form primary key of another table (parent table)





ANSWER= A) FOREIGN KEY

2nd puc computer science chapter 14 mcq 2nd puc computer science chapter 14 mcq Reviewed by Vision Academy on March 06, 2023 Rating: 5

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