Monday, 12 October 2015

Informatics Practices Class XI Ch-9 Question Answers


 Lab Exercise        
Ques.1)                Consider the following table name “GYM” with details about Fitness products being sold in the store.
Table Name:Gym
      PrCode stores Codes of Products
      PrName stores names of Products
      (UnitPrice is in Rs.)
PrCode
PrName
UnitPrice
Manufacturer
P101
Cross Trainer
25000
Avon Fitness
P102
Tread mill
32000
AG Fitness
P103
Massage Chair
20000
Fit Fitness
P104
Vibration Trainer
22000
Avon Fitness
P105
Bike
13000
Fit Express
Write SQL statements to do the following:
a)                  Display the names of all the products in the store.
Select PrName from gym;
b)                 Display the names and unit price of all the products in the store
Select PrName ,UnitPrice from gym;
c)                  Display the names of all the products with unit price less than Rs.20000.00
Select  * from gym where unitprice<20000;
d)                 Display details of all the products with unit price in the range 20000 to 30000
Select * from gym where unitprice between 20000 and 30000;
e)                  Display names of all the products by the manufacturer “Fit Express”
Select * from gym where manufacturer=”Fit Express”;
f)                   Display all rows sorted in descending order of unit price.
Select * from gym order by unit price desc;
g)                 Add a new row for product with details:”P106”,”Vibro Exerciser”,23000,manufacturer:”Avon Fitness”.
Insert into gym values(“P106”,”Vibro Exerciser”, 23000,”Avon Fitness”);
h)                 Change the Unit Price data of all the rows by  applying a 10% discount reduction on all the products.
Update gym  set unitprice=unitprice-unitprice*1/10;
i)                    Display details of all the products with manufacturer  name starting with “A”
Select * from gym where manufacturer like’g%’;
Ques.2)  Consider the following table Employee and Department.
Employee
ECode
LastName
FirstName
Department
101
Sharma
Amit
Sales
102
Arora
Shiv
Personnel
103
Lakshmi
KS
Accounts
104
Rajlani
Shivika
Accounts
105
Thakral
Satvik
Sales

Department
DepCode
DepName
Budget
101
Sales
200000
102
Personnel
150000
104
Accounts
300000
Write SQL statements to do the following:
a)                  Display the last names and first names of all the employees.
Select last name, first name from employee;       
b)                 Display the department names all the employees, without duplicates.
Select distinct department from employee;
c)                  Display all the details of employees with last name as ”Lakshmi”.
Select * from employee where last name=’Lakshmi’;
d)                 Display all the details of employees whose last name is “Rajlani” or ”Sharma”.
Select * from employee where last name=’Rajlani’ and last name =’Sharma’;
e)                  Display the codes and first names of all the employees of ‘Accounts’ department.
Select ecode, firstname from employee where department=’accounts’;
f)                   Display department names of departments with budget above 18000.
Select department from department where budget>18000;
g)                 Display all the details of employees whose First name begins with “S”.
Select * from employee where first name like’s%’;
h)                 Display department details(from Department table) in descending order of Budget amount.
Select * from department where budget desc;
i)                    Change the Department name “Sales” to “Marketing” everywhere in the table “Employee” and “Department”
Update employee set department=’Marketing’ where department=’sales’;
Update department set department=’Marketing’ where department=’sales’;
j)                    Add a new row with appropriate data values in department table.
Insert into department values(103,”Management”,50000)
k)                 Create table Department with columns of appropriate data types.
Create table department (DepCode integer(3),DepName varchar(10),Budget integer(8));

12 comments:

  1. Hey do you have the answers for Lab exercises for functions of mysql?

    ReplyDelete
    Replies
    1. yahh i tooo in need of Lab exercises for functions of mysql???

      Delete
    2. Visit this website for all the solutions: www.theprofoundreport.blogspot.com/2019/02/solutions-for-ncert-informatics.html

      Delete
  2. u have not put the colon for the (j) question.
    check it once!!!!!!!!!!!!!!!!!

    ReplyDelete
  3. Gadhe kitni saari galti kar rakhi hai ...

    ReplyDelete
    Replies
    1. Visit this website for all the solutions: www.theprofoundreport.blogspot.com/2019/02/solutions-for-ncert-informatics.html

      Delete
  4. Visit the website for all the solutions: https://theprofoundreport.blogspot.com/2019/02/solutions-for-ncert-informatics.html

    ReplyDelete
  5. There are many mistakes in the syntaxes. Pls do check

    ReplyDelete
  6. I need answers of all questions.

    ReplyDelete
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