Class 11 IP Sample Paper Term 2 Set 1

Term-2 Examination 2021-22

Class: 11

Subject: Informatics Practices

Subject Code: 065

Maximum Marks: 35/ Time: 2 hours

General Instructions

♦ The question paper is divided into 3 sections – A, B and C

♦ Section A, consists of 7 questions (1-7). Each question carries 2 marks.

♦ Section B, consists of 3 questions (8-10). Each question carries 3 marks.

♦ Section C, consists of 3 questions ( 11-13). Each question carries 4 marks.

♦ Internal choices have been given for question numbers – 1, 8 and 13.

Section –A

Each question carries 2 marks

1. Write short notes on big data and its characteristics.

Ans: Big data: – Big data holds rich information and knowledge which can be of high business value. Five characteristics of big data are: Volume, Velocity, Variety, Veracity, and Value.

Write Short notes on Natural Language Processing..

Ans: NLP: Natural language processing (NLP) facilitates communicating with intelligent systems using a natural language.

2. Differentiate between char (n) and varchar (n) data types with respect to databases.

Ans:

char(n):· stores a fixed length string between 1 and 255 characters · if the value is of smaller length, adds blank spaces · some space is wasted

varchar(n) :· stores a variable length string · no blanks are added even if value is of smaller length · no wastage of space.

3. Write SQL Command to perform the following –

Table : student

ID	Name	Class	fee
101	Sunil	10^th	2500
102	Sandesh	10^th	NULL
103	Rahul	11^th	3100

a) Delete last record from the table.

Ans: delete from student where ID=103;

b) Add / insert new record in the table { 104 , ‘Chandresh’,’11^th‘ , 3150}

Ans: insert into student values (104 , ‘Chandresh’,’11^th‘ , 3150);

4. Mr. Ramesh Created a table “Hotel” and inserted two records as given below.

On verification of records He found that he entered the wrong phone number of Ramesh. Now help him to correct the phone number by writing the sql command.

The Correct Phone Number is 9406688990.

Table :Hotel

Id	Custname	Phno	Dateof_reporting	City
101	Ashok	9823652653	2021-08-08	Pune
102	Ramesh	9452363636	2021-07-09	Mumbai

Ans: update hotel set phno=9406688990 where id=102;

5. MS Sunita created a Database ,inside database she created two tables ( Tb1 , Tb2). Later on she find that table Tb2 is not required for her database .Now she wants to delete the table. Help her by writing the sql command to delete the table from the database.

Ans: Drop Table Tb2; or DROP TABLE IF EXISTST b2 ;

6. Write the name of SQL command for the following.

a) To list all databases

Ans: show databases ;

b)to show description of a table “TB2”

Ans: desc TB2;

7. Mr. Ben appeared for an interview to get job. Interviewer asked the following two questions based on MY SQL.

a) The key which is has unique and not null value is known as …?

Ans: primary key

b) A table can contains how many primary keys?

Ans: Only 1

Section –B

Each question carries 3 marks

8. Write SQL commands for the following –

Table : student

ID	Name	Class	fee
101	Sunil	10^th	2500
102	Sandesh	10^th	NULL
103	Rahul	11^th	3100

Consider the above table student {ID,Name,Class, Fee }

a) Write SQL Command to delete column fee.

Ans: alter table student drop fee;

b) write SQL command to apply primary key constraint on column ID.

Ans: alter table student add primary key(ID);

c) Suggest name of column on which unique constraint can be applied.

Ans: ID

a) What is the degree and cardinality of table student.

Ans: degree : 04 and cardinality : 03

b) write SQL Command to add a column city with data type Varchar(25)

Ans: alter table student add city varchar(25);

c) write SQL Command to delete primary key.

Ans: alter table student drop primary key;

9. Write the SQL Command to perform the following task.

a) Create a database named “MYDB” and use it.

Ans: create database MYDB

use MYDB

b) Write sql command to list all tables of MYDB database.

Ans: show tables;

c) Write sql command to delete database MYDB.

Ans: drop database MYDB

10. Explain cloud computing and its services.

Ans: Cloud Computing :Cloud computing allows resources located at remote locations to be made available to anyone anywhere. Cloud services can be Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS).

Section –C

Each question carries 4 marks

11. Consider the following table and write the SQL Queries the following –

ID	Sname	Dateof_Join	City	Fee
101	Arjun	2015-08-07	Pune	25000
102	Sanjana	2018-07-04	Pune	NULL
103	Sunil	2018-07-14	Mumbai	30000
105	Swati	2016-04-15	Mumbai	45000

a) To display name and date of joining of those student who belongs to Pune.

Ans: select sname ,Dateof_join from student where city=”pune”;

b) To display name of those students who have not paid the fee.

Ans: select sname from student where fee is NULL;

c) To display details of those student who paid fee more than 30000

Ans: Select * from student where fee>30000;

d) To display the records in descending order of Date of joining.

Ans: select * from student order by dateof_joindesc;

12. Consider the following table Employee and write the output of SQL queries for (a to d) or (e to f) .

Table : EMPLOYEE

EmpNo	Ename	Salary	Bonus	city
101	Aaliya	10000	234	Pune
102	Kritika	60000	123	Mumbai
103	Shabbir	45000	566	Pune
104	Gurpreet	19000	565	Delhi
105	Joseph	34000	875	Delhi

a) Select * from employee where city=’pune’ and bonus>350;

Ans:

EmpNo	Ename	Salary	Bonus	city
103	Shabbir	45000	566	Pune

b) selectename , salary+bonusas”total_pay” from employee order by Enameasc;

Ans:

Ename	Total_Pay
Aaliya	10234
Kritika	60123
Shabbir	45566
Gurpreet	19565
Joseph	34875

c) select * from employee where name like ‘ – %a’ ;

Ans:

EmpNo	Ename	Salary	Bonus	city
101	Aaliya	10000	234	Pune
102	Kritika	60000	123	Mumbai

d) select Ename , salary from employee where bonus > 600 ;

Ans:

Ename	Salary
Joseph	34000

e) select Ename,city from employee where city not in (‘pune’,’mumbai’);

Ans:

Ename	City
Gurpreet	Delhi
Joseph	Delhi

f) select Ename,Salary*12 “annual sal”, bonus*12 “annual bonus” from employee .

Ans:

Ename	annual sal	annual bonus
Aaliya	120000	2808
Kritika	720000	1476
Shabbir	540000	6792
Gurpreet	228000	6780
Joseph	408000	10500

g) select distinct(city) from employee;

Ans:

Distinct(city)

Pune

Mumbai

Delhi

h) select * from employee where city like ‘%e%;

Ans:

EmpNo	Ename	Salary	Bonus	city
101	Aaliya	10000	234	Pune
103	Shabbir	45000	566	Pune
104	Gurpreet	19000	565	Delhi
105	Joseph	34000	875	Delhi

13. Consider the following MOVIE table and answer the SQL queries based on it.

MovieID	MovieName	Category	ProductionCost	BusinessCost
001	Hindi_Movie	Musical	124500	130000
002	Tamil_Movie	Action	112000	118000
003	English_Movie	Horror	245000	360000
004	Bengali_Movie	Adventure	72000	100000
005	Telugu_Movie	Action	100000	NULL
006	Punjabi_Movie	Comedy	30500	NULL

a) To display MovieID, MovieName and BusinessCost of Movies.

Ans: Select MovieID, MovieName,BusinessCost from Movies;

b) To List the different categories of movies.

Ans: Select distinct(Category) from movies;

c) To display movieid,name and and Net Profit of all the movies. (Hint: Net Profit = BusinessCost – ProductionCost)

Make sure that the new column name is labelled as NetProfit.

Ans: Select Movieid,Moviename , BusinessCost – ProductionCost as “ Net Profit” from Movie

d) To display movieID, Name and ProductionCostof all the movies having ProductionCost greater than 80,000 and less than 1,25,000.

Ans: selectMovieid,Moviename ,ProductionCost from movie where ProductionCost> 80000 and ProductionCost <125000 ;

Class 11 IP Sample Paper Term 2 Set 1

Class 11 IP Sample Paper Term 2 Set 1

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