7.22

Give a lossless, dependency-preserving decomposition into 3NF of schema \(R\) of Exercise 7.1.

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Use the algorithm given in Figure 7.12.

Also don’t forget that \(F = F_c\) (see exercise 7.7)

\[ R_1 = \{ A, B, C\} \\ R_2 = \{ C, D, E\} \\ R_3 = \{ B, D\} \\ R_4 = \{ E, A\} \\ \]