UPPCL AE

Question

WHY ONLY OPTION D IS CORRECT A AND B ARE ALSO 

Comments

@eyeamgj

please add all question under uppcl tag,so it will be helpfull for all of us.

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$YZ\rightarrow P,\,(B_2C_2)\rightarrow\left \{D_1,D_4\right \}$

$Y\rightarrow X,\,B_2\rightarrow \left \{A_2,A_3,A_5\right \}$

so these are not functional dependencies

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$(A)YZ\rightarrow P$

$B_{2}C_{2}\rightarrow D_{1}$

$B_{2}C_{2}\rightarrow D_{4}$

Not possible.

$(B)Y\rightarrow X$

$B_{2}\rightarrow A_{2}$

$B_{2}\rightarrow A_{3}$

Not possible.

$(D)ZP\rightarrow Q$

$C_{1}D_{1}\rightarrow E_{1}$

$C_{1}D_{2}\rightarrow E_{1}$

$C_{2}D_{1}\rightarrow E_{2}$

$C_{2}D_{4}\rightarrow E_{2}$

It is possible for given instances.

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OK  GOT IT .......OK I WILL ADD AS SOON AS I WILL GET FREE TIME OF 1 HR

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Now i add all question ok?

please check