CS403 Assignment No 2 Solution Fall 2023

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CS403 Assignment No 2 Solution Fall 2023 – VU Assignment Solution – VU Fall Assignment Solution

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Assignment No. 2

Solution Fall 2023

CS403

Please Note this Before Submit Your Assignment:

Solution

SQL Code:

CREATE  TABLE  COMPANY  (

Comp_ID  VARCHAR(5)  PRIMARY  KEY, Comp_Name VARCHAR(50),

Comp_City  VARCHAR(50),

);  Comp_Ph  VARCHAR(15)                •

CREATE  TABLE ITEM (                    1

Item_ID  INT PRIMARY  KEY,

enName VA.RCHAR(50),

Item_Unit  VARCHAR( 10),

Item_Quantity INT, CID VARCHAR(5),

FOREIGN  KEY (CID) REFERENCES COMPANY(Comp_ID)

);

INSERT INTO COMPANY  (Comp_ID, Comp_Name, Comp_City,  Comp_Ph#) VALUES

(‘C00l ‘, ‘Toyota’,  ‘Islamabad’,  ‘051-321002’), (‘C002’, ‘Honda’,  ‘Lahore’,  ‘042-321002’), (‘C003’, ‘Suzuki’,  ‘Peshawar’,  ‘091-321002’),

(‘C004’, ‘MITSUBISHI’,  ‘Quetta’,  ‘081-321002’),

(‘C005′, ‘Nissan’,  ‘Gilgit’,  ‘092-321002’);

INSERT INTO ITEM (Item_ID, Item_Name, Item_Unit, Item_Quantity,  CID) VALUES

(1, ‘Lights’,  ‘PCs’,  50,  ‘C00l’),

(2, ‘Bumper’,  ‘PCs’, 20,  ‘C002’), (3, ‘Seats’,  ‘Set’,  10,  ‘C003’),

(4, ‘Tires’, ‘Set’,  60, NULL),

(5, ‘Engine’,  ‘PCs’,  5, NULL), (6, ‘Breaks’,  ‘Set’,  14, ‘C005′);

1. Theta Join on Company and Item tables having a condition ltem_Unit = PCs:

SELECT*

FROM COMPANY

JOIN ITEM ON COMPANY.Comp_ID = ITEM.CID WHERE ITEM.Item_Unit= ‘PCs’;

1. i Equi Join on Company and Item tables:

SELECT*

FROM COMPANY

JOIN ITEM ON COMPANY.Comp_ID  = ITEM.CID;

iii. Natural Join on Company and Item tables:

SELECT

FROM COMPANY

NATURAL  JOIN iTEM

1. iv. Semi Join on Company and Item tables:

SELECT*

FROM COMPANY

WHERE  Comp_ID  IN (SELECT DISTINCT  CID FROM  ITEM WHERE  CID IS NOl

NULL);

1. Theta Join on Company and Item tables having a condition ltem_Unit = PCs: Answer:

Relational Algebra Expression:

(COMPANY  l><l    ITEM ON Item_Unit = ‘PCs’

Comp_ID      Comp_Name      Comp_City     Comp_Ph      Item   IO     ltem   Name     Item   Unit      ltem_Quantity      CID C001             Toyota                  Islamabad        051-321002                  1      Lights             ~-     _I                        50    C001

C002            Honda                  Lahore             042-321002                 2  Bumper

1. ii. Equi Join on Company and Item tables: Answer:

Relational Algebra Expression:

(COMPANY  l><J    ITEM ON COMPANY

 

 

iii. Natural Join on Company and Item tables: Answer:

Relational Algebra Expression: COMPANY  ITEM

1. iv. Semi Join on Company and Item tables: Answer:

Relational Algebra Expression:

COMPANY    I><      ITEM

• Comp_ID     Comp_Name     Comp_City      Comp_Ph

!          C001             Toyota —- Islamabad,    051-321002

!       C002            o MinaiOai_’  042-321002

 

 

 

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