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Graded Discussion Board (GDB) of CS403 - Database Management Systems will be launched on 19th of February 2014 (19-Feb-2014) and will last for 48 hours only till (20-Feb-2014) 11:59 PM

GDB_FALL 2013 Dated: Feb 14, 14

Dear Students!

Please Note that GDB of CS403 will be launched on 19th of February 2014 (19-Feb-2014) and will last for 48 hours only.

The topic will be as follows:

Suppose there are two entities "building" and "apartment". The entity "apartment" is dependent entity and cannot exist independently and “building” is an independent entity. The "apartment" entity contains the primary key (building_name) of building entity to identify the apartment of that specific building. The "apartment" entity also has its own identifier, i.e. apartment_no but that identifier is not sufficient to identify the particular apartment, so in this case we used both keys building_name and apartment_no to identify the particular apartment.

 

You have studied different dependencies in the course. You are required to choose the appropriate dependency applicable in  the above scenario. Justify your answer with reasons.

Try to provide precise, to the point answer and avoid irrelevant details.

 

For any query: CS403@vu.edu.pk

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Instructor CS403

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Replies to This Discussion

waqas bhiya u r rite

I think referential dependency is correct, what you say? tell me anyone?

Tariq bahi tell me the correct option and give some shortcut detail 

Me too think Referential Dependency is best for this?

bahi jan me email id: aimhskt@gmail.com, please send me data about GDB CS403

ye discussion prho gy sb ka demgh kharab ho jaye ga apny thoughts pr bhi shak ho ga ufffffff too much differences in everyone's thought  i am still confused  Ya Allah plz Help me.... 

ap apny thoughts dain bt supportng reason strong ho.........

tariq bhai to hr point mein new e kuch batay hai

kbi koi kbi koi

aoa,

i cant understand what to describe? GDB mein to answer conciseness sy dena hy aur yeh dependencies ko alag alag define krna hy yaa kisi aik ka batana hy? please help to understand the Q.

JazakAllah

u need to tell with reasons that which dependency is best for the given situation. no definitions

i think Identifier Dependency is correct answer! 

identifier dependency means in case of existence dependency dependent entity "apartment" does not have its own identifier. in this case it does have identifier so we cant use it.

depndency ka name batana nai konsi gvn scenario pe aplicable hai with logical reasn 

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