Question: For relation schema R ( A , B , C , D , E , F ) AND DEPENDANCE SET F { D - >

For relation schema R(A,B,C,D,E,F) AND DEPENDANCE SET F{D->BE,E->AF,F->CD,AEF->>BCD}.GIVE DEFINITION OF KEY AND DEFINE THE POSIBBLE KEYS WITH ARGUMENTATION. IN WHICH NORMAL FORM IS R - DEFINE THE FORM AND GIVE ARGUMENTATION WHY R IS IN THIS FORM? IF IT IS IN LOWER THAN 3 NF NORMALIZE TO 3NF

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