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# CS403 Assignment No 2 Solution & Discussion Due Date: 02-05-2012

### Assignment:

(a). Find out the Cartesian product (D1 × D2 × D3) of the given pair of sets.                                      Marks: 5

D1 => Set of first two Vowels                  =     D =  {A, E}

D2 => Set of three country codes            =     D2 =  {213,54, 994}

D3 => Set of first three odd numbers       =     D3 =  {1, 3, 5}

(b). Keeping in view the previous assignment scenario lets suppose there is a simple database for some entities in CMS  might contain relations for Student, Class, Faculty and Enrollment. The relation schema would be written as:

Student (Stu_Id, LastName, FirstName, Major, Credits)

Faculty (Fac_Id, department, rank, name)

Class (Class_No, Fac_Id, Schedule, room)

Using this sample relational schema, identify foreign key in Class relation and Composite primary key in Enrollment relation.                                                                                                                                     Marks: 5

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BIBI "bareera" first question wrong hay zara ghor say dekhain.

Well es main error hai thora sa

aap nay end main kuch duplicate kr diya hai thora sa

Nabeel sahib kahan se ghalat hy?

Thek to hy yara....

(e,54,1)
repeat ho rha hai ..
total 18 sets b'nay chahiye ap k 19 hein ..
baqi thek hai ..

thanks Miss Bareera for Good solution

two Question are good

salm question 2 main serf kia primry key hy dosri koi key nhi kia

Question 2 ka b koi solution de do?

Yar extendend date b end hone ko ha........ please share the solution

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