IT 403 Saudi Electronic University Fundamentals of Databases Questions

Question Description

I’m working on a Computer Science question and need support to help me learn.

1. Give an example of a relation schema R ? and set F ? of functional dependencies such that there are at least three distinct lossless-join decompositions of R ? into BCNF.

2. Give an example of a relation schema R and a set of dependencies such that R is in BCNF but is not in 4NF.

3. List any four characteristics of a bad database design?

4. Normalize the following Schema with the given functional dependencies into BCNF.

EnrollTrain (TraineeID, ClassID, Level, TrainerID, TraineeName)

Functional Dependencies:

FD1: TraineeID, ClassID ==> Level, TrainerID, TraineeName

FD2: TraineeID ==>TraineeName

FD3: ClassID==>TrainerID

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