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Problem Description

Car Sales Management System

The Car sales management system that provides some basic

information related to Cars, like car company details, car modelnumber, dealer details, customer details, car price, car specication.

The application is used by the following user groups:

Car Company

Car Dealers &

Customers

ew Table structures are given below,

Company:

Column Name Data Type &

Size

Constrain

ts

Description

compid !archar"#$% rimary

'ey

(ni)ue *D for Car

Companycompname !archar"#+% -ame of the Companyhead)uarters !archar"#+% ead)uarters of the

companycontactno -umber#+% Contact -umber of

Companyemailid !archar"#"% /0cial mail1*D of

Companydescription !archar"#$% Description of the

Company

Model:

Column Name Data Type &

Size

Constrain

ts

Description

modelid !archar"#$% rimary

'ey

(ni)ue *D for Car 2odel

modelname !archar"#+% -ame of the Car 2odel

year -umber#3% 4ear of 5aunchtype !archar"#+% Type of Carprice -umber#+% rice of the Carcompid -umber#$% oreign

'ey

67isting Compid in

Company Table

Dealer:

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Column Name Data Type &

Size

Constrain

ts

Description

dealerid !archar"#$% rimary

'ey

(ni)ue *D for Car Dealer

dealername !archar"#+% -ame of the Car Dealer

dealerlocation -umber#3% 5ocation of Dealershiptype !archar"#+% oreign

'ey

67isting type in 2odel

Tablecompid -umber#$% oreign

'ey

67isting Compid in

Company Table

Customer:

Column Name Data Type &

Size

Constrain

ts

Description

customerid !archar"#$% rimary'ey

(ni)ue *D for CarCustomer

customername !archar"#+% -ame of the Customerpurchasedate -umber#3% Date of urchasestatus !archar"#+% 8tatus#9ooked,

6n)uired, purchased%dealerid !archar" #$% oreign

'ey

67isting dealerid in

Dealer Tablemodelid !archar"#+% oreign

'ey

67isting modelid in

2odel Table

/ther Constraints to be given as applicable.

Write SQL Queries or t!e scenarios listed belo"# $Ma%imum Mars:

'()

*# Display t!e Dealers+D, Location, Company name, price "!o

deal "it! Car Model - .+nno/a0#1# Display t!e purc!ase date, type o car, price, dealer +D o t!e

customer-02o!n0#3# 4etrie/e all petrol cars rom dealer +D - .D*((1#0

'# Write a 5uery to update t!e price o all Petrol cars by 67 & allDiesel cars by *(7#

8# 4etrie/e all t!e cars in t!e increasing order o t!eir Price &

decreasing order o Dealer+D9# Create t!e Table Company "!ere company +D must not be let

blan and it s!ould not accept duplicate /alues#

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6# Write a SQL Query to alter t!e size o description column to

*((## 4etrie/e t!e Car model details lie compname, model name,

price using ;oin "!ic! are in t!e range bet"een *(la!s to

*8la!s#