7/28/2019 Cs403 Paper

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CS403 Database Management System. Current Papers. 2013

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CS403 Database Management System

Current paper 25 May 2013

Total MCQS 20 1 Mark

Short Question 2 of 2 MarksShort Question3 of 2 Marks

Short Question 5 of 2 Marks

1- What is extension and intension

2- What is query evaluation engine

3- How many resultant tables we have, while implementing one-to-one relationship in designing

database?

4- What is degree of a relation?

5- Difference between null value and zero value.

6- How does Tuple-oriented relational calculus differ from domain-oriented relational calculus?

My today cs403 paper.

50% mcqs were from past papers.

Difference between relation and relationship. 2 marks

Define degree of a relation. 2 marks

Explain difference operation (A-B) between two relations. 3 marks

Anomalies se rewlated tha ek question 3 number ka.

1 relation di gie thi jo k 1st normal form mai thi, usy 2nd normal form me convert krna tha. 5marks

or ek question ki mujhy khud samjh nhi lagi or wo mery zehan mai b nahi he.

Remember me in your prayers.

Write Two type of Anomalies?

Write the main Function of Subtype Discriminator?

ik scenrio diya tha us mai sy Entities dhond k mention karni thi

ik mai Diagram thi jis mai Entitiy Student aur us k Attributes {ID,

Skill, Name, Fathers Name, Address} thay in mai sy hum ny best

candidate for multivalue attribute btana tha

ik mai Student X aur us k attributes diyay thay aur us ki

dependencies btana tha k ye BOYCE law mention krti han k nhi

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aur ye attributes sb candidates key han k nhi Yes OR No mai

answer dena tha

ik mai 2 table Customer ka aur Invoice ka diya hua tha jis sy hum

ny Resultant Table A nikalna tha Through Realtional somthingformula diya tha k Customer X(EquiJoin)Invoice and EquiJoin =

Customer.Customer ID

4 types of anomalies: page 170

Redundancy

insertion anomaly

deletion anomaly

updation anomaly

Subtype discriminator:

This is tool or technique which provides us a

methodology to determine that to which suctype one

instance of a subtype belongs.

to determine the relation we place an attribute in the

entity supertype which can specify through its value,that to which entity subtype it belongs. page 108

today paper

1) Diagram di hoi thi us ko analyze karna tha or foreign key

batani thi. 2

2) Describe the insertion and difference operation 2

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3) 2 table tha us ma foreign key batai hoi thi or ya batana tha

ka ya default ha ya domain ha 3

4) 2 Table tha us ka resultant find karna tha or ya batana tha

ka X U Y = Y U X (yes/no) 5

today's paper was very tough....only few mcqs were from past

papers, 3 or 4 i guess, and not a single Subjective question was

from past. and 3 short questions were about 1NF and 2NF.

Questions lengthy the is liye note nahi kiye. prepare well.....and

pray for all.

Subjective:

Write Two type of Anomalies?

Write the main Function of Subtype Discriminator?

ik scenrio diya tha us mai sy Entities dhond k mention karni thi

ik mai Diagram thi jis mai Entitiy Student aur us k Attributes {ID,

Skill, Name, Fathers Name, Address} thay in mai sy hum ny best

candidate for multivalue attribute btana tha

ik mai Student X aur us k attributes diyay thay aur us kidependencies btana tha k ye BOYCE law mention krti han k nhi

aur ye attributes sb candidates key han k nhi Yes OR No mai

answer dena tha

ik mai 2 table Customer ka aur Invoice ka diya hua tha jis sy hum

ny Resultant Table A nikalna tha Through Realtional somthing

formula diya tha k Customer X(EquiJoin)Invoice and EquiJoin =

Customer.Customer ID

PermalinkAll MCQS Mostly New if Concept clear then you can attempt it

easly

Scenario was given. Draw cross reference matrix ............5 Marks

Table given Find Equi join.........5marks

Find one to one Relation>>>2marks

Other i don't remember

Friends if you want to get good attempt in Subjective

question.....then understand all the concept from lecture 16 to

20.....and mcqs conceptually from 5 to 20

http://virtualians.pk/xn/detail/6543099:Comment:416663http://virtualians.pk/xn/detail/6543099:Comment:416663http://virtualians.pk/xn/detail/6543099:Comment:416663

7/28/2019 Cs403 Paper

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MY today's paper was very tough....only few mcqs were

from past papers, 3 or 4 i guess, and not a single

Subjective question was from past. and 3 short

questions were about 1NF and 2NF. Questions lengthythe is liye note nahi kiye. prepare well.....and pray for

all.

-------------------------------------------------------------------

In my today's paper subjective is easy MCQS is not from

past papers (Moaaz File) sirf 2 3 hi thay Moaaz bhai ki

file mai sy baqi sb new thay tuff thay

Subjective:

Write Two type of Anomalies?

Write the main Function of Subtype Discriminator?

ik scenrio diya tha us mai sy Entities dhond k mention

karni thi

ik mai Diagram thi jis mai Entitiy Student aur us k

Attributes {ID, Skill, Name, Fathers Name, Address}thay in mai sy hum ny best candidate for multivalue

attribute btana tha

ik mai Student X aur us k attributes diyay thay aur us ki

dependencies btana tha k ye BOYCE law mention krti

han k nhi aur ye attributes sb candidates key han k nhi

Yes OR No mai answer dena tha

ik mai 2 table Customer ka aur Invoice ka diya hua tha

jis sy hum ny Resultant Table A nikalna tha Through

Realtional somthing formula diya tha k Customer

X(EquiJoin)Invoice and EquiJoin = Customer.Customer

ID

Remember Me In Your Prayers

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7/28/2019 Cs403 Paper

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MY TODAY Paper............

All MCQS Mostly New if Concept clear then you can

attempt it easly

Scenario was given. Draw cross reference matrix............5 Marks

Table given Find Equi join.........5marks

Find one to one Relation>>>2marks

Other i don't remember

Friends if you want to get good attempt in Subjective

question.....then understand all the concept from

lecture 16 to 20.....and mcqs conceptually from 5 to 20

May be i am wrong ....But mostly paper look like

this....

============================================

My today cs403 paper.

50% mcqs were from past papers.Difference between relation and relationship. 2 marks

Define degree of a relation. 2 marks

Explain difference operation (A-B) between two

relations. 3 marks

Anomalies se rewlated tha ek question 3 number ka.

1 relation di gie thi jo k 1st normal form mai thi, usy

2nd normal form me convert krna tha. 5 marks

or ek question ki mujhy khud samjh nhi lagi or wo mery

zehan mai b nahi he.

Remember me in your prayers.