Course Solutions Uncategorized (Solved) : Consider Relation Sport Evenlahlete Nun Cvcn Id Score Alhlct Nane Event Descrip Spor Bes A Q33389922 . . . .

(Solved) : Consider Relation Sport Evenlahlete Nun Cvcn Id Score Alhlct Nane Event Descrip Spor Bes A Q33389922 . . . .

 

Consider the relation Sport Evenlahlete nun, cvcn id, score,alhlct nane, event descrip, spor, bes athlelc and the sct of l athlete num-> athlete name, event id->(event description, sport), (athlete num a) lunctional dependencics n d)-*-Score. Sporl->best athlelc In which normal form is the relation sport event? Normalize it till 3N1ї b) Consider the table RIA, B, C, D, E wilh FDs BC-ADE, D->Bi. The possible keys are BC thal R salislies? Explain. Decoimpos lo BCNF il no and CD. Whal is lhe besl nornal lo already in 1CNI c) CConsider the table R(A, 3, C wth lDS Al-C, C-D. If this table is decomposed into 2 tables RI(A, D) and R2(A, 13, Is this decomposition a lossless decomposition? Is it a lunclional dependency preserving decomposition? Explain your answer

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