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Normal Forms

 
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If I have relation schema R(A, B, C, D, E) with functional dependencies: AB->C, CD->E, C->A, E->D:
a)find all the (minimal) keys for R
b)state the normal form for R and describe functional dependencies that violate higher NF
c)decompose R into 2 (or more) relations that are in highest possible normal form (if possible) and give for each relation of your decomposition a minimal basis for the FD that hold in these relations

 
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I hope you don't expect us to do your homework. If you need help with something, show effort and ask for help/guidance instead of the solution.

 
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Typical homework problem.
First, you have to attempt it according to what you learned in class.
Then we might offer advice.

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