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Old 04-30-09, 21:27
DJPlayer DJPlayer is offline
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BCNF Help

I've been toying w/ this problem for.. pfft.. couple days now.
trying to decompose into BCNF.

here is what it all looks like. F={A,B,C,D,E,F,G,H}

A -> C
A -> G
A -> H
AD -> C
DE -> F
G -> H

pretty sure that if I see how this is done I can figure out the flow.. this is just the beginning piece to a very large problem.
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Old 05-01-09, 01:29
dportas dportas is offline
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What have you done so far? Remembering that BCNF means every non-trivial determinant is a superkey...
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Old 05-01-09, 04:35
mike_bike_kite mike_bike_kite is offline
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Quote:
Originally Posted by DJPlayer
BCNF Help
If you give us the email address of your lecturer then we could send your homework direct to him and thus save you any effort what so ever.
Quote:
Originally Posted by DJPlayer
this is just the beginning piece to a very large problem
If you're having difficulties with just the beginning piece then it might be worth asking yourself whether you're suited to your course.
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Old 05-01-09, 05:49
pootle flump pootle flump is offline
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The first step to getting into BCNF is getting into 1NF.
The second step is 2NF.
Etc.

As you can probably tell already, you will get short shrift here unless you do some work.
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Old 05-01-09, 06:11
healdem healdem is offline
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Quote:
Originally Posted by mike_bike_kite
...
If you're having difficulties with just the beginning piece then it might be worth asking yourself whether you're suited to
your course.
or (assuming that you have attended the lecturers, tutorials, you've read the books, followed the references and done some research of your own) perhaps your tutor/lecturer perhaps ought to ask themselves if they are suited to that course
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